Growing black roses can be a rewarding experience, as they require specific soil, light, and temperature conditions. The ideal soil type for black rose aeoniums is well-draining soil and plenty of sunlight. Watering these plants sparingly is crucial for healthy growth.
The Aeonium Black Rose succulent requires very little watering, only when the soil is dry. Propagate the plant at the best time to ensure it receives enough light. For indoor plants, a sunny window is perfect, and the Aeonium arboreum ‘Zwartkop’ needs 0.8 cups of water every 12 days when it doesn’t get direct sunlight.
Black roses thrive in bright, direct light and require minimal watering when the soil is completely dry. Special care includes avoiding water retention in the plant. Place the plant less than one foot from a window to ensure it receives enough light to survive.
Black magic roses grow best outdoors with full sun, well-drained soil rich in nutrients, and at least one to two inches of water per week. Avoid planting in hot summer sun locations to avoid burning and drying of its leaves. Trim off faded or dead leaves at the base to encourage healthier growth, ideally during late winter or early spring to coincide with the black rose’s growth spurt.
In summary, growing black roses is a rewarding experience that requires careful attention to soil, light, and temperature conditions.
📹 BEST TIPS: HOW TO GROW AND CARE FOR AEONIUM BLACK ROSE
If you’re looking for a natural black flower, Aeonium Black Rose comes very close. They could grow extremely black & tall and …
How to care for black rose?
The black rose aeonium, also known as Aeonium Zwartkop, is a beautiful variety of Aeonium arboreum, known for its dark foliage and easy care. It can be grown indoors in bright indirect light or outdoors in full sun to partial shade. The name “Black Rose” comes from its deep purple-black leaves, which resemble roses. This succulent plant, native to the Canary Islands, can reach 5 feet in height and 3 feet in diameter at maturity. It is best kept away from cold, drafty windows and air vents.
How do you take care of a black rose?
Black Rose plants thrive in dry environments, so avoid misting them or providing extra humidity to prevent harmful fungi from lingering on leaves. Choose a well-draining potting soil that doesn’t retain too much moisture. For indirect sunlight, water 0. 5 cups every 12 weeks. Use a water calculator to customize watering recommendations or download Greg for advanced options. Black Roses also thrive near bright, sunny windows.
How do you revive a black rose plant?
Overwatering is a common cause of aeonium problems, as aeoniums are known to thrive in hot, dry environments. In the event that the foliage of the black rose exhibits washed-out or pale characteristics, it may be indicative of overwatering. To remedy this, it is necessary to reduce the frequency of irrigation and allow the plant to dry completely before providing further hydration. Please disseminate this article to your acquaintances who are aficionados of succulent plants.
How to bring a rose back to life?
The rose has now reached a point of sufficient stability to permit continued observation and appreciation.
Can you grow black rose indoors?
The Black Rose Succulent is capable of thriving indoors with sufficient sunlight, provided that it receives an adequate level of light. To ensure optimal health, it is recommended to avoid overwatering and to maintain the rosette form in a visually appealing and well-cared-for state, thereby promoting longevity.
Can black roses grow naturally?
Black roses are not a naturally occurring phenomenon; rather, they are the result of human intervention through artificial creation. They are characterized by a dark shade, typically white or red, and are observed in a range of breeds. Despite their dark hue, various myths have been created about their existence. One such myth was that black roses were only found in a small Turkish town called Halfeti due to the pH of the local water.
How can I grow a black rose?
Black Magic Rose is a popular hybrid tea rose, known for its deep red blooms and velvety petals. Created in the 1990s by Rosen Tantau, it is known for its striking color, disease resistance, and repeat blooming. To care for this rose, it should be planted in full sun, well-drained soil, and receive at least one inch of water per week. Fertilize three times during the growing season. The roses make excellent cut flowers with one large flower at the tip of each stem. To ensure optimal growth, plant them in a spot with at least six hours of bright, direct sunlight per day. Insufficient light can affect their flowering and disease resistance.
Can you naturally grow black roses?
Black roses are not a naturally occurring phenomenon; rather, they are the result of human intervention through artificial creation. They are characterized by a dark shade, typically white or red, and are observed in a range of breeds. Despite their dark hue, a number of myths have been created about their existence. One such myth was that black roses were only found in a small Turkish town called Halfeti due to the pH of the local water.
Why is my black rose succulent dying?
Overwatering can cause droopiness in your Black Rose Aeonium, so check for soggy soil and repot if needed. Sunlight shortage can cause drooping, so ensure bright, indirect light and consider grow lights. Pests and diseases can wilt leaves, so inspect regularly and treat with soap or neem oil. Identifying signs of distress is crucial for your Aeonium’s well-being. Check for wrooping leaves, discoloration, texture changes, leaf drop, pests, and stunted growth. Regular inspection and treatment with soap or neem oil can help ensure your Aeonium’s health.
Why is my black rose succulent turning green?
Sunlight and temperature stress are the main factors affecting the color change of succulent plants. Other factors include water, plant types, and nutrients. Protecting them from extreme conditions can help them thrive longer and provide more vibrant enjoyment. To maintain easy-to-color varieties like Sedum Rubrotinctum ‘Roseum’, Graptopetalum ‘Purple Delight’, x Sedeveria Letizia, Aloe vera plants, Haworthia, and Snake plants, is recommended. As a succulent enthusiast, it’s important to appreciate their color changes and remember that even if they fade, with proper care, they are likely to return.
Why are black roses so expensive?
Black roses, a mysterious and enigmatic flower, have been a beloved motif in art, literature, and folklore for centuries. However, they do not exist naturally, as they are glamorous tricksters with deep red, purple, or maroon colors. The scarcity of the pigment responsible for this unique hue is not the cause of the absence of true black roses. Instead, dark roses are the result of human rearing and hybridization strategies. Some cultivars, such as ‘Black Baccara,’ ‘Black Magic,’ and ‘Black Beauty,’ show dark and smooth petals, resembling the dark tone to the unaided eye.
These roses reveal fundamental shades of dark red or profound purple. The captivating red pigment, or anthocyanin, is responsible for the unique hue of roses. However, the scarcity of this pigment prevents the creation of a truly black rose.
📹 Black Spot Roses Treatment
Black spot is a fungal disease that appears as black and yellow patches on the leaves of roses. In this video, I’ll show how to treat …
In india we use neem leaf extract powdered together with turmeric to prevent fungal attacks and we also use neem leaf compost( repeat, compost) into the potting media to safeguard roots and neem, camphor, turmeric paste on cuts (if we had to cut any branch) at the very beginning of the notorious Indian monsoon. Believe me it is a very effective way to shield your roses from being attacked by fugus but remember it is only a preventive measure.
A few years ago I collected a load of used coffee grinds from McDonalds, I then often piled them around the base of my roses, this pile was about 3 or 4 of inches high. I had seen somewhere that the old coffee grinds would feed the micro life, that in turn would feed the roses. This would allow the roses to become very healthy and be strong enough to resist the black spot. I was amazed that my roses that year showed ‘NO’ black spot. I had used a lot of coffee grinds, not a small amount..
Many articles told me to get rid of leaves with fungus and black spot. They showed the host ripping off the leaves. You are the only person who showed me how to rid the leaves appropriately, by pulling down. I tried your way and it was much less traumatic for the plant. A nice detachment without bits and pieces of leaves coming off. Thanks.
I live in Houston where it obviously is warm/hot and humid much of the year. I’ve avoided roses all my life for fear of Blackspot. But now that I’ve seen many in my region successfully grow roses I’m giving it a shot, with considerable trepidation. Ha! Your classifying it as primarily cosmetic issue that can be controlled gives me some hope. Fingers crossed. Great vid! Thank you!
I’ve been pulling those ugly black spot leaves forever, as my dad did in his extensive rose gardens. I plan to clean up very well this fall and put in new bark after I prune the plants back, in January I really dislike the stuff & thought it was something I was doing wrong. I hadn’t realized it came in on the breezes. Thank you for this great article with down to earth usable information! Glad I found your website!
Jason, you’re my „Go To” guy for any Rose questions. I’m a relative newcomer to growing roses, but thanks to you, they’re doing well. Bought them from you and they’re doing beautifully thanks to your advice. Thank you so much, they „Make” the front garden, so glad I can access your information online.
Thanks again for debunking the the idea of black spot eradication . I once was a zealot for spray programs on my various rose gardens . About 30 years ago I went to a more sustainable organic approach . I found if I kept the ground free of leaves and mulched with fresh wood chips,90 percent of my fungal rose problems became non issues . Not to mention the money I saved along with my health and the environment .
This is very interesting. I only have one rose, but it’s amazing! It’s a Peace rose and this is it’s fifth year. Each year it gets bigger and has more blooms despite lack of “proper” rose care. This year it has black spot. So I’m pleased to know that it’s not a serious problem (apart from how it looks). 😁 Thank you for this information.
Thanks for making this article. I thought black spot was a disease that killed the leaves on rose bushes and eventually could kill the plant. Now that I have my own lovely rose garden I was very upset when the spots came. Sooo relieved to know that it is really only a cosmetic issue. I can handle that and treat it without getting upset!
I went away and came home to find most of the leaves on my Rose Bush on the ground, before the Roses were even in bloom (June). Usually the rose bush is healthy and in full bloom by May but this year the leaves have had black spot and the roses have barely opened out. I will try and fungicide and hope new healthy leaves grow.
Cornmeal has worked for me. I occasionally buy cornmeal for one project or another. I never use much and by the time I need it next, it is out of date. I, at the advice of an old seasoned rosarian, used it on my roses with blackspot. It worked for that season. I expect the ingredients are, like baking soda, nitrogen-heavy and pushes off the blackspot leaves and puts on new green foliage.
Many thanks Jason, I will follow your advice, we are well into the blooming season in the Southern Hemisphere, and we get plenty of rain. So we are plagued with black spot. As you say, the blooms are unaffected, but it is unsightly. The overall view of the garden is beautiful though, regardless of the black spot. Thanks again
Thank you for taking the time and effort making these articles but especially sharing your professional knowledge and experience, which of itself is both priceless and very generous of you. Hadn’t realised how invasive/pervasive it is, and how widespread it appears to be. So disappointed that a brand new rose gifted me as a bereavement gift has developed blackspot within days! Have checked for a lot of the natural ‘ ingredients ‘ and unfortunately do not seem to be easily available here. I shall continue my almost ‘quest’ for natural remedies and if anyone could advise on their availability, am grateful in advance! Thankyou again. Many blessings and greetings from England
Another great article Jason thank you. I personally used to lose my mind over black spot. after some advice on the Internet and also perusal your YouTube website I’ve come to understand it’s not that big of a deal. I get a little bit more anxious when it comes to my new roses when they’re very small and that’s when I have used neeme oil. All in all a little hand Pruning of the infected area goes a long way.
I found that if i keep some space around the roses, they can resist black spot. IMO, roses are some kind of high desert plant and they like it dry and breezy. a really soggy season makes a mess of my roses. edit: IMO, mulching roses enhances moisture and black spot. decorative rocks, pea gravel+sand, or bare ground is what roses like better.
Just recently discovered your you tube. You’re awesome. I am in western Washington, so a similar climate as you. Your info is very good and helpful. Thanks for sharing your knowledge. I really needed this. My roses are stunning for 30 years. But black spot has plagued me in the last few years. Thanks for the info.
Amazing article! So informative! Over the years, I have been picking off the black spot leaves and trying to keep the base of the rose plant clear of these infected leaves, also, I have used the natural spray that you mentioned, and it seemed to keep things fairly good. It seems like some roses are more susceptible to the black spot and other roses seem to never get the black spot. You’re wonderful article just confirms I’ve been doing the right thing at least 🌹
The first month of growth which is generally a rainy season, is the worst. I found that if I just hang in there and remove only a few bad leaves every single day ( no need to get it all right away), it resolves itself within a few weeks. This is because by doing this every day, you’re helping the air circulation and as your roses becomes more dependent on a drip system and less on rain, it just dies out eventually. I also see that it’s worse with roses that are being attacked by aphids and other insects. So once the predatory insects are out, the roses and foliage just start looking gorgeous without any insecticide needed.
Thank you!! Armed with all this knowledge I’m going to be better prepared for next year . I left all the mitigations for fungus and pests way too late! Everything is blooming after a great spring start, but foliage has now been decimated!! Thrips, caterpillars, aphids, rust, blackspot: seen it all and it’s not even July 😅
I’m in Scotland and have been using sulphur (over two kilos in the last five months) for around fifty roses. I’ve already been eliminating the leaves and stems then burning them. There’s seven old roses I’ve taken out and quarantined because they were so badly infected. The quarantined ones have bounced back well and they receive more sulphur and feeding than any of the rest (just to find out what happens when they’re separated and also what becomes of them when they’re given more feed than the others) I’m also using rock meal, fish based liquid fertiliser and a silicon booster to improve health. The temperatures here rarely go above 25 degrees, it’s working quite well so far and I’ll keep the advice not to use the sulphur on hotter days in mind for next summer. The only problem is the sulphur and fish fertiliser gets stuck to my clothes so after a bit of work I smell like a corpse on a day visit from hell. Looking forward to using the mulch and the other options you have offered here, thank you.
Good info, thank you. I love Neem. Not sure about black spot being less of a problem in arid areas. We drip irrigate under the mulch and go weeks without rain (sometimes months) and still struggle with the nasty blackspot 🤷This year we’re having an unusually wet winter so I brought out the nukes – Lime sulphur on roses and fruit trees.
Hi Jason, I thought this info might be of interest. My Albertine climber is very prone to black spot. Last year sulfur was ineffective. This year I sprayed Bordeaux mix on 21 March and then a decoction of horsetail (mare’s tail, equisetum) on 17 April. Now on 13 May there’s no black spot at all. Fingers crossed!
My old Roses have been always healthy, but some years ago I brought in this disease by composted leaves from a walnut tree. I think the fungus is widespread on other plants, so be careful with compost. Chemical fungicides didn’t help much, and picking up infected leaves is not easy on a grassy ground. What helped was to water the roses not from above with a sprayer, but by hand with a hose only at the roots. We have dry climate here, so this is easy. This season I will try the baking soda solution, will see.
I really enjoy your U tube articles and very much respect your opinion – I have been gardening here in the US for more than forty years and the experience tells me your common sense advise corresponds with what I have observed/learned. So, the reason for this – black spot. My new roses have been badly affected (they were supposedly disease resistant, what/which diseases I ask myself). I have worked hard following your advise and now I wonder if I should cut off the hips, they do not appear diseased? I look forward to entertaining myself all winter long perusal
The black spot fungus is more than cosmetic, I think. If it damages leaves (lots of them) then the plant becomes weaker and can’t photosynthesize, right? I had a couple of rose plants that nearly died because they became so infected, and quickly (I live in FL where the humidity is really high). I didn’t know what was causing the black spots, and once I looked it up, both plants had 80% of their leaves covered with black spots to some degree. I really like how you provide natural alternatives to help with this issue! This was a very good article, and glad I found you here.
Great suggestions! So glad I found this article. I was ready to go buy a chemical fungicide, which is against my natural gardening philosophy. I will be doing leaf cleanup this fall and trying the baking soda trick next year. Coffee grounds sounds like a good idea too. Any suggestions for iron deficiency?
Your articles are fantastic. I have learned so much! I live in Northern Ca around zone 7-9. The leaves on my roses don’t fall off during the winter. You talk about stripping the leaves. I have never done that. When is it done? When is it too late? Feb 26th today. Thank you so much for all or your great tutorials.
Thank you for a straightforward, thorough, and helpful article. I like that you presented options in increasing order of potential negative impact/risk and that you gently encouraged 🙂 people not to use the big guns. I just subscribed and I’m looking forward to perusal more of your content. I have a question about mulching. I’m a beginner with roses; I planted some 1.5 years ago that were given to me in their nursery pots when some neighbors moved away. I researched the best location, planted them, and didn’t do too much else except remove spent blooms and occasional pruning. They all have blackspot now and possibly had it last year. They have always had wood mulch in their bed. You mention putting wood mulch down after the other steps. Is the current mulch likely harboring the fungus? Do I need to remove the 1.5 yr old mulch completely and add new? Sorry for the long comment. Thank you again for the article.
On some roses the blackspot can cause complete defoliation by the end of the year. I think you are talking about Sulphur spray but I’ve also seen it as a soil supplement to help the rose. I was told that planting garlic around the rose keeps disease away and it seems to work but perhaps mostly by deterring aphids. I don’t use chemicals on aphids as i depend on birds. Whilst rain definitely spreads the spot i suspect slugs snails and greenfly of spreading the spores too. I have come across a biological treatment available commercially that i have not tried, this uses a bacteria captured in the droppings of a tiny red worm. The bacteria attacks the fungi. I’d imagine that the baking soda and oil is waterproofing the leave surface so that the 7 hours of wetness is not happening but i suppose splash from below could still happen. I suppose you could block the leaf from breathing – so perhaps there is a time of day when you could spray without such happening. This might be when stomata are closed such as times of high evaporation. The carbon dioxide released from the baking soda may encourage them to open so watering the rose at the same time might help I’ve also heard of weak vinegar being added with the baking soda.
I bought a 3’ rose in a 5 gallon pot in April. Beautiful roses bloomed of soft pink with yellow and the blooms were big. I prepared the hole and planted it. After. 2 weeks I fertilized with rose food as instructed. Then, the brown spots and yellow leaves started. I watched your article and did as you said and removed the yellow leaves and made sure to clean up afterwards. It is June and the temps are already in 90s and there are hardly any leaves left on my rosebush and there are no new buds. What do I do?.
3:36 I’ve introduced some sort of fungus through the wood chip mulch. This fungus eventually weakened all my Hebe shrubs with the plants’ removal as the only option. It wasn’t a pine bark or an arborist wood chip. God knows what kind of wood went into production of this mulch. From that negative experience on, I only mulch with quality compost. Compost contains beneficial microbes that suppress fungal spores and other pathogens on the soil surface. Otherwise, very useful information. To the point. Subscribed.
Fantastic website, and beautiful backdrop and scenery! In West Virginia USA here, love mountains. Would love to visit someday. Happy to see I’ve been doing the right thing pulling off black spot leaves, accidentally discovered that easy trick. Good to see I have more uses for horticulture oil (Did use that this past February on roses and fruit trees), will look for the phosphorus version of baking soda.
Agree so much wiht MsLouisV below – Jason is outstanding. I’m just about to get my first truly difficult plant, Souvenir du Docteur Jamaine – blackspot and other diseases prone. I purchased the ingredients for the potassium solution that you describe here last year – but really didn’t have a need for it. The plants that did survive the winter (ALL of the planted, and one of the potted) just didn’t need it last year – I was careful to remove leaves etc. This year I’m upping my game on many levels – and will do my best to get Souvenir through with my zone 5 intermediate gardener ability. Thank you again Jason. Warmest regards Jennie
Hi I live where its pretty hot through all seasons Rose’s never go in to rest mode I’m afraid I’m not a very good gardener and have used a hedge trimmer on the roses (sorry you ve probably cringed at just the thought of that ) they look tired especially by end of season should I prune them early October. I also get black spot which when they look tired makes them look very unhealthy, I may try the coffee that the lady has said works .Thank you for your articles I’m trying to learn .
Thanks alot for your informative articles on Roses. I have a couple of rose trees in the ground. Of late, they have not been too healthy. Besides blackspots now and then, the leaves are quite dull and brittle. And the Roses are small and not much if a bloom. We have been adding vermicompost and neemcake time and again and a much if kitchen waste (diluted). Could you please advise
Thank you for this great article – it’s a few years old now and I hope you’re still reading comments. I’m new to roses and just planted climbing roses along my iron fence last season. It’s now early June in their second growing year in my yard and I began noticing blackspot several weeks ago. I didn’t know what it was and assumed it had to do with watering or something, so I let it go and am now noticing significant blackspot and yellowing of leaves on two of the three plants. You mentioned that this is just a cosmetic issue, but I did notice that the lower stems of both affected plants seem to be very thin, weak and gnarled. Could this be some other disease? Or just the fact that it’s a young plant? In either case, I’d like to get a jump on containing the spread and mitigating for next season. How much of the foliage is safe to prune off, and is it safe to do at this point in the season? Should I wait to do major foliage removal until the end of the season? I’m in zone 7a, Middle Tennessee, which is hot and humid for most of the summer.
I don’t understand, what is the best time to do a preventive treatment? It’s my first year as a gardener, i planted a lot of roses but I don’t know when and the best way to treat trem. But I already bought the products! 33 years ago i bought a hora serie from a magazine called L’ami Des Jardins whose issue was roses anciennes. On the cover was a picture of New Dawn and Toby Tristan. It was love at first sight! I still have the magazine and now I managed to buy more than 50 Old Roses in a year. I’ve always had a lot of plants but l’ve always lived in very hot countries. Now I’m living in Europe and I can grow roses
Very interesting and informative article ! I just bought my first few roses today and one of them is a bush rose but with a high stem / stock and it’s currently in the pot I bought secured with a bamboo stick do I need to transfer it into the soil with that stick? Can’t find an answer anywhere kind regards
Thanks so much for information on black spots, you said it’s more for cosmetic effect, however it seems my plans losing lots of leaves, and very slowly re-grown, I have more 10rosese types and I am worries it’s going to skills my plans. We are winter now in Australia, what is a best way for me to feeds and boost the re-grow to my Roses after the spray??
another excellant article. i have been thinking of moving my double knock out rose out away from house too close & it doesn’t get enough air flow. can it be moved before winter this year or better to move in spring of 2024 ? i think i know the answer but hoping by some chance i can do it before this winter. your thoughts ??
Hi, Very good info! I want to apply the Bordeaux Mix on my roses, which had a miserable black spot infestation this summer. Where can I buy the pre-mixed Bordeaux Mix? I looked Bonide Copper. Is it the same? The alternative is to make my own mix using formula 2-2-10. Where can I buy the ingredients? Thanks!
The only and best solution to Blackspot is to immediately pick off the affected leaves from the stems. Roses quickly recover with fresh new ones in a week or two. Rose Clear even is a waste of time because once the leaves are affected Rose Clear does not remove the damage and they expend crucial energies pointlessly and hopelessly trying to recover.
Inherited a very old Queen Elisabeth Rose, I love it but boy it has been neglected. Can I start with pruning and then feeding? It’s looking all long thin branches, poor rose! I live in Auckland New Zealand which has a temperate climate but humid. How far does the lawn needs to be away? And it’s autumn now, can I clean it up?
I live in the Pacific Northwest, very wet here. I have a red climbing rose that has gotten black spot every year for about 11 years. Last year I planted tomatoes under the rose, and there was no black spot. This year I didn’t plant the tomatoes there, and I have black spot again. I have no idea if the tomatoes made a difference, but I’m going to try again next year.
What I do to get rid of disease, here in UK, is during February and March, put 10ml of Jeys fluid in a 5 litre watering can pour on the soil only do not let the liquid go on leaves, this can be done every week, until the end of March, and your roses will grow without disease, it works all the time, for me. Jeys Fluid is a real garden miracle, not sure if you can purchase this in the US.
Is my rose better off with my stripping ALL the black spot leaves? I need to be a better housekeeper and not let the blackspot leaves just fall to the ground. I can put them in my compost bin bc I don’t use that worm rich soil for my roses:-). I plant all my seed crops in it. It is so full of humas from worm castings that it is like chocolate pudding. I’ve been having it for years now.
If black spot appears on the stem is the plant doomed? 🥀 I have what appears to be black spot on the main stem. Could it be something else? If so what??? And thank you for saying that it is a mostly a cosmetic problem that has some simple solutions (and sharing them) makes me feels less like tossing the bunch I’ve recently rooted worried that I’d introduced some terminal disease into my garden. 💐
Those black dots are consistently hard to treat I did the hand pick doted leaves, sprayed with most affordable solution in the internet. It does spread to my hydrangea now too on the same bed,and i picked all the effected hydrangea leaves, the dots come back again .whereas,the separate 6 ft bed next to it my other rose and hydrangea is okay(the same treatment method as that deseased rose)
Thank you for the useful information. I have a question regarding rust on roses. Do you treat it the same as black spot? I have it very severely on my David Austin Graham Thomas rose. You can see the rust on the new canes, I have treated with systemic anti fungicide as well as Neem . It is almost the beginning of July. The new growth is showing signs of rust/black spot. I am tempted to cut it entirely back and see if that helps. I live in Zone 9 any suggestions are very appreciated. Thanks in advance.
Hi I am interested if you could help me with a black spot problem on my roses. Up until this growing season I have not had black spots on my roses. This spring all my roses have some degree of black spots. I am wondering if it because we have had a few cooler days in May than normal or it is something in my soil? I have roses in two separate areas of my yard and both areas are affected. Any suggestions on how I can fix this problem? Thank you for your time.
I just found your absolutely excellent website! Great work! Question – I live in the tropics (near the equator, similar humid climate to Singapore).. Ive previously had total failures, growing roses in POTS, till I found the soil was highly acidic (from acid rain/ground water) and now I treat regularly with lime, and have had “instant” success, so just re-started (optimistically) with another 40 roses, in pots. However, now blackspot! There is no dormant season here, and the 33+ degree temperature rarely gets down to 25 degrees, even overnight. Any suggestions for treatment – beyond leaf removal – would be welcome. I am currently looking into adding 10% Biochar (or horticultural charcoal) with friendly bacteria added from compost tea, then add to the potting mix or as a top dressing – charred rice husks are plentiful here. Ive also heard that sulphur spray may be ok if washed off 15 minutes after application. Other than that I was planning to use Bordeaux mixture, but am now a bit doubtful…. Any Suggestions? Thanks, Schaun
Hello! New subscriber to your website. I’m enjoying you sharing your knowledge 👍 Hope you don’t mind a specific question… I have roses in zone 11 that were on their own for a year, I’m trying to get them healthier and produce more blooms. I learned on another website that you can use banana peels to make your own fertilizer tea in water. Since I live with monkeys and have a plethora of banana peels, do you have an opinion on how often I can use this tea? I also use epson salts, manure and dish soap spray as needed. Thanks!🌹
I’m wondering if using a weak hydrogen peroxide/ water mix would prevent this fungus in the first place? I have a routine I follow with my tomatoes that I follow with this mix and it works wonders with blight. It basically changes the ph of the leaf and therefore kills off the spores. The hydrogen peroxide evaporates after a few hours and is great applied in the late afternoon after the heat of the day has passed…
Hi Jason, for the treatment of Blackspot can I replace the ‘horticultural oil’ in your Potassium Bicarbonate recipe with Neem Oil? if so would the recipe be 1 tsp Potassium Bicarbonate + 1/2 tsp Neem Oil + 2 drops liquid soap in 2 pints water? (Apologies if you’ve given this in other articles and I’ve missed it)
is there any rose that shouldnt be pruned. I pruned mine in the fall two of them look dead, no new growth at all. My knock out was more than 5 ft. I cut it back to about my knees and it is getting new growth. My concern is with the two that have no new growth. I dont if they are once bloomers, hybrid. I only know they are Heart of Gold.
My climbing roses was doing so beautiful then came these brown spots, it actually turned the whole tree all orange I had to cut it down to roots, but my other climbing roses are having brown spots now, so going to take out leaves, I went to my front house, now my knockout roses are having brown spots to but it has millions of blooms, do I take the leaves out or just leave them alone?
So the copper spray in your amazon wishlist is the Southern Ag spray and that one has lime that will stick to the plant during winter, right? I was going to use Bonide copper spray but is that not as potent and mainly used for during the season? I wish I could find the southern ag spray at other stores, I’ve recently had bad luck ordering from amazon and it being a fake product. Appreciate any help thank you in advance!
I gave up on tea roses years ago because too much trouble and too little results here in humid N.C. But now that I’m a permaculture gardener for vegetables and pollinator flowers, I broke down and planted some heritage rosa rugosa shrubs (for the rose hips for vitamin C 🙂 Jason’s website offers a lot for any general gardening! Just wondering if black spot is as common in the old shrubby type roses as the modern hybrids. We’re going into hot-humid weather now 🙂
Great article and guidance. However, there seems to be some confusion on the internet about horticultural oil. When I google it I either get Neem Oil or Horticultural liquid soap. I also looked on Amazon Uk. Here I found Potassium Bicarbonate, but once again only Neem Oil and Horticultural Insecticidal soap. Please would you be kind enough to give more guidance on this. In the US maybe everyone knows what it is, but so far this information does not appear to have reached the internet!
Hi Jason, I have been following your recipe with 2 tsp potassium bicarbonate with 1 tsp horticulture oil in a half gallon spray bottle, every other week if weather permits. I’m wondering if I have made a mistake with the formula as I notice there are still black spots and yellow leaves. Also, is it ok to spray on flower buds? I notice that one of my climbing roses have their flowers buds burnt on their edges and seems to fail to open.
Hello, I used homemade ” Dishwasher soap,cooking oil and milk” in bottle of water then spraying to all plant including Rose plants, working very good except 🍑 peach tree leafs. Most problem is Suckers in Rose plant, hard to control fungus peace leafs, I New about Copper but couldn’t find this year so putting only ” Green earth” let me know your thought and advice. Thanks 🙏. Zz.
Wow. Never heard of your Horticultural Oil either! So looked in Amazon UK and yes they do have ONE SELLER ONlY! At a terrible cost of nearly £40 plus £15 postage!!! So just cannot afford that. So am unable to make up your last mixture you showed spraying…… the Potassium with the Horticultural Oil and a couple of drops of Fairy Liquid it would be in UK. That’s a real shame.
Hi, had this problem with my roses as well the few last years unfortunately. But last year I somewhere read a very simple (and it appeared to be very effective) tip : If you like and eat bananas, just after eating them, place the peelings around the plants. They seem to have all necessary minerals etc. in order to let disappear the fungus. I didn’t believe it at first. But by trying so (didn’t cost anything else than the already eaten bananas) it appeared to really make disappear the black spots … This year forgotten and the spots reappeared … So this might be a cheap and rather effective way to get rid of this ugly kind of leaves … Maybe something somebody could try ? Good Luck from the Netherlands (rather humid as well 😉 ) …
Thank you so much that was most informative and helpful, I will be more diligent about removing the lower leaves and mulching. Also I’ve a large gallica rose I think it is and it has a grey fungus on the leaves. I find it very difficult to keep looking good as although I try and dead head a lot I I cannot keep up with the dead heads and with fungus as well it does not look good. Can you advise please. When and how much should I prune it?
thank you for this great education. it takes a lot of weight from me as i took over the rose garden from my father an he had always almost perfect roses by spraying heavy stuff. for me this is out of question and so last year i had a really big problem with black spots. i realized that some plants are infected more than others. the tea-hybrids from the sixties and fifties such as papa meilland are the worst ones . old garden roses are much better. also the modern ones. Now i read in a book about H2O2. and tried it out and the result is promising. do you know anything about this.? Thank you again
How do I put a picture of the leaves on my rose bush to find out why it’s making leaves like this I was just trying but I don’t know I need I need you to I need people to see it with the leaves look like and maybe y’all can help me and tell me what it is Anybody help me? I would really really appreciate it