Can Chrysanthemums Withstand The Heat In Arizona?

Chrysanthemums, also known as mums, are a popular fall flower that can add vibrant color to any garden. However, not all varieties of chrysanthemums thrive in the hot and dry climates of Arizona. To help your plants survive an Arizona heatwave, a combination of planning, maintenance, and ingenuity is necessary. Hardy garden mums can withstand temperatures below zero degrees Fahrenheit if the roots are established and protected. Most native plants are heat- and drought-tolerant, but this doesn’t mean they can tolerate neglect. Garden maintenance is still key.

Chrysanthemums grow best from transplants, which should be purchased with not bloomed yet. After blooming, remove spent blooms to encourage a second flush of color. Make sure the container is properly filled with water. Chrysanthemums can be grown in all 50 states and in all zones, but they will do the best in zones 4-9 with special care. They can be grown in all 50 states and in all zones, but they will do the best in tropical or hot regions with special care.

In the region, most varieties bloom in spring and fall, and they flower every time the temperature falls. The family of Chrysanthemum includes various types, each with their own unique characteristics. Cool temperatures help the blooms last longer, while high temperatures cause them to quickly fade. In the desert Southwest, regular and frequent irrigations are essential for survival, especially during hot summer months. Chrysanthemums can withstand winter temperatures as low as -20°F (-29°C), making them a great choice for gardeners in colder climates.


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What temperature should I cover my mums?

To encourage new growth in mums, remove wilted blooms and use mulch to cover the base when temperatures reach 20°F. Maintaining a consistent temperature is crucial for their health, as soil temperature fluctuates from freezing to thawing, damaging roots. Mums bloom throughout the fall, with some species providing blooms from late spring through November. However, some mums may be fooled by cool weather and short days into blooming in spring, so it’s important to cut them back to ensure they bloom again in the fall. Keeping the soil well-drained and consistent in temperature is essential for maintaining the health of your mums.

How long do potted chrysanthemums last?
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How long do potted chrysanthemums last?

Potted mums are best suited for cooler temperatures, as they can last up to eight weeks before frost. To ensure their longevity, it’s recommended to buy them when the temperature is cooler, as the flowers may fade soon. To care for potted mums, follow these simple tips:

  1. Choose the best chrysanthemums for your fall containers. Ensure that the plants are not under or overwatered, as this can stress them and affect their performance.

  2. Avoid placing the mums in warm conditions, as the flowers may fade soon. Waiting until it’s cooler will help maintain their beauty for up to eight weeks before frost.

Is 90 degrees too hot for mums?

Mums are popular autumn flowers that bloom everywhere and can withstand colder temperatures down to 20° Fahrenheit. They prefer the 60-70° Fahrenheit range but not hotter temperatures over 90° Fahrenheit. Mums grow well in both potting soil and soilless mixtures, and should be moist, well-drained, and composted if necessary. If planted in gardens, they should be planted in raised beds with a well-draining soil mix. Mums are not particularly tasty to deer and rodent pests due to their pungent scent, but they are effective at keeping animals out of your garden.

They produce the natural compound pyrethrin, which keeps many insects away, but should be watched for by aphids, mites, and leaf miner larva. To prevent pests, avoid wetting the leaves while watering and weeding your garden, and ensure the air is not too dry or too cool when indoors.

How do you keep mums alive in hot weather?
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How do you keep mums alive in hot weather?

To care for indoor mums, ensure they receive at least four hours of direct sunlight a day, with a window that allows plenty of sun. Keep the soil moist, but don’t over-water. If the pot gets too dry, place it in a container or bucket with 2 or 3 inches of water that the plant can absorb. Deadhead the plant often to prevent wilted flowers and dead stems from competing for water and nutrients. Once the mums stop blooming, place them in the ground outdoors once the weather starts to warm.

Caring for outdoor mums requires abundant sunlight, well-draining soil, and ample space. Plant them 18 inches from other plants to allow their roots to expand. Water them but not too much, ensuring they get at least an inch of water per week after the first week. Deadhead the plant by removing wilted blooms and dead stems or leaves. In colder climates, mulch them with leaves, wood chips, or straw, about 3 or 4 inches deep and surrounding the entire base. If frost hits, prune them back to only about an inch of stems above the ground and leave the mulch around the plant. In spring, the mums will regenerate with warmer weather.

What temperature damages mums?

Potted mums can withstand light frosts but prolonged exposure to freezing temperatures can damage their foliage and reduce their cold tolerance. Protective measures include placing them in a sheltered location near a building or under an overhang, and surrounding them with insulating material like straw or mulch to regulate soil temperature and protect roots. Mulching also helps retain moisture, preventing soil drying out during winter months.

Can mums take extreme heat?
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Can mums take extreme heat?

To ensure longer-lasting blooms, keep your chrysanthemum plants cool and receive partial shade when they are still warm (75 degrees or more). Protect potted mums from heat stress to keep them blooming longer. Chrysanthemums can be susceptible to leaf spot, powdery mildew, and viruses like mosaic or stunt. Prevention is key, so avoid crowding or planting them in shade, as moisture can create breeding grounds for disease.

Mums are also susceptible to bugs like aphids, caterpillars, leafhoppers, leafminers, and spider mites. Rabbits and deer usually prefer blueberry bushes over chrysanthemums. The ‘Clara Curtis’ is a tough, old-fashioned chrysanthemum flower with pink, daisy-like blooms with golden centers.

Will potted chrysanthemums come back every year?
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Will potted chrysanthemums come back every year?

Mums are plants that can be classified into two main types: florist mums and garden mums. Florist mums are compact potted plants found in nurseries and do not return annually, while garden mums grow loosely and reliably return. Both types are part of the same species, Chrysanthemum morifolium, and their return depends on the presence of stolons, runners near the ground that release new roots and shoots. Garden mums have stolons and are perennial, while florist mums have few or no stolons and may not survive winter.

Mums come in various flower forms, including daisy-like singles and pompoms. They are available in a wide range of colors, including traditional fall colors like cream, yellow, orange, bronze, and red, as well as cooler coolers like roses, lavenders, and purples.

How do you care for chrysanthemums in Arizona?
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How do you care for chrysanthemums in Arizona?

Garden mums are a popular plant in Phoenix, providing a brief but intense splash of color in landscapes during late October through November. They thrive in Phoenix soils amended with composted organic matter and require evenly moist soil. To maintain a healthy growth, irrigate as needed. Garden mums are short day plants that require shortening day lengths to flower, occurring naturally during late summer and fall.

They are best treated as a fall and early winter bedding plant, outplanting nursery grown stock in early October when daily maximum air temperatures fall below 100 o F. They have an ethnobotanical history, being made the national flower of Japan in 910. They have also been used in China for medicinal purposes and have potential in treating hepatocellular carcinoma.

How hot is too hot for chrysanthemums?

Blackout systems have been observed to induce flowering in chrysanthemum plants, with the process being regulated by temperature. The reduction in photoperiod causes a corresponding reduction in the length of the flowering period. Similarly, exposure of plants to temperatures of approximately 85°F or higher delays flowering.

Can chrysanthemums take full sun?

Chrysanthemums flourish in soil with good drainage and full sunlight. For optimal growth and flowering, they require six or more hours of sunlight per day during the summer months. Plants with less light are prone to weakening and produce fewer flowers.

Can mums survive in Arizona?
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Can mums survive in Arizona?

In climates such as those of Phoenix, Arizona, and Las Vegas, Nevada, the cultivation of mums can be undertaken with greater care and precision in terms of timing. It is essential to ensure that the plants remain hydrated and are planted in suitable locations at the appropriate time to facilitate optimal growth.


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Can Chrysanthemums Withstand The Heat In Arizona?
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