Effective home remedies to combat hydrangea powdery mildew

Powdery mildew is one of the most common problems that hydrangea enthusiasts may face. This fungal disease thrives in high temperatures and progresses particularly quickly during dry weather when dew settles on the hydrangea leaves.

If you notice a white coating on your plants that darkens over time, immediate action is necessary.

Powdery mildew is a fungal disease that develops on various plant species, including hydrangeas. This fungus prefers high temperatures and can thrive in dry conditions, making it particularly dangerous during warm and dry periods when plants are weakened and more susceptible to infections.

Identifying powdery mildew on hydrangeas is relatively straightforward if you know what to look for. The initial symptom is a white coating on the leaves that gradually darkens. As the disease progresses, the leaves may curl, yellow, and eventually fall off or even die. Occasionally, it also appears on flower buds, which can affect their development and blooming.

Fighting powdery mildew on hydrangeas doesn't always require the use of chemical plant protection products. Several proven home methods can help combat this disease:

1. Soap and baking soda spray. This natural spray is one of the most popular solutions. To prepare it, dissolve 1 tsp of grey soap and 1 tsp of baking soda in 2 L of water. Spray the hydrangeas every 3-4 days to combat the fungus effectively.
2. Garlic spray. Garlic has strong antifungal properties that can help fight powdery mildew. Crush 20 g of garlic and pour 1 L of water over it. Let the solution sit for 24 hours, then strain it. Before use, dilute the liquid with water at a 1:1 ratio and spray the plants.
3. Nettle spray. Nettle is another natural remedy that can help fight powdery mildew. Combine 1 kg of fresh nettles with 10 L of water and let it sit for 24 hours. Use the resulting undiluted liquid to spray the infected plants.
4. Milk spray. Milk, especially when combined with water, has antifungal properties. Prepare a solution by mixing milk with water at a 1:8 ratio. Spray the hydrangeas once a week to prevent the development of powdery mildew.