Hydrangea plants are susceptible to various pests, including fungi, bacteria, and viruses. To combat these diseases, it is essential to address them promptly, as unchecked pests can cause significant damage to the plant’s growth and blooms. Proper care, including adequate water, correct light exposure, the right soil mix, and timely fertilization, can fortify them against pests and diseases.
To treat hydrangea insect issues, use a strong stream of water to wash off insects without damaging the plants. Hand-picking is an inexpensive technique that addresses small insect populations, such as Japanese beetles. Sticky traps can also be used to eliminate pests. To prevent many diseases, use a soaker hose or spray nozzle to water the roots of plants in the morning, ensuring any water on the leaves is removed. Spray infected plants with horticultural oil at the winter rate, paying particular attention to the base of branches.
Insecticides are effective but should be used in a mixture of rubbing alcohol and water (1:7 ratio) to kill the pests. Heavily infested plants can be removed and replacements planted in the autumn. Non-pesticides, such as those containing captan or copper-based products, can also help.
In summary, hydrangea pests and diseases can be addressed through various methods, including spraying with general pesticides, washing leaves with soap, using insecticidal soaps, and using non-pesticides. By being proactive and following label directions, you can ensure your hydrangea plants remain bug-free and healthy.
📹 Save Your Hydrangeas from Powdery Mildew!
The Garden Mouse treats two hydrangeas for powdery mildew. www.thegardenmouse.com …
📹 Q&A – Why does my hydrangea have brown dark spots all over?
This is cercospora leaf spot which is fungal. UT Extension Agent Chris Cooper says will not affect the plant, it only looks bad.
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