- Use broth from horsetail against powdery mildew
- Make horsetail broth yourself
- Treat roses with horsetail broth
- Fertilize roses organically with horsetail manure
Roses are probably one of the most beautiful garden plants. Unfortunately, they are often attacked by powdery mildew and other diseases. Treat fungal diseases and pests with horsetail broth. The wild herb is ideal for roses to strengthen the leaves of the ornamental plant.

Use broth from horsetail against powdery mildew
The gardener does not count horsetail among his favorite plants. However, the herb does a good job when it comes to caring for roses.
In addition to tannins and essential oils, it contains a lot of silicic acid, which is effective against fungal diseases such as powdery mildew on roses.
The rose petals are sprayed with a broth made from horsetail when an infestation occurs. Box broth for roses is also good for prevention.
Make horsetail broth yourself
You can easily prepare horsetail broth yourself. For this you need:
- plastic jar
- fresh or dried horsetail herb
- rainwater or tap water
- Sieve
Put 200 grams of fresh herb or 15 grams of dried herb in the jar and preferably pour rainwater over it. Let the mixture steep for 24 hours.
Then the brew is boiled. It takes about half an hour for the silica to separate from the leaves. The broth must then cool down and finally be diluted 1:4 with fresh water.
Treat roses with horsetail broth
In case of acute fungal attack, spray the leaves with the broth several times a day.
Field horsetail is also ideal for prevention. The silica strengthens the leaves so that fungi and pests cannot even penetrate.
For prevention, treat the roses with horsetail broth once a week.
Fertilize roses organically with horsetail manure
Horsetail manure is prepared in a similar way to broth, except the herb is left in the water for an extended period of time and not boiled. The liquid manure is ripe when no more bubbles appear.
The liquid manure is diluted with water in a ratio of 1:5 and poured around the roses once a month. Be careful not to water the leaves and roots directly with the liquid manure.
The minerals strengthen the plant. The leaves appear healthier and there are usually more flowers.
tips
Horsetail broth also helps against numerous pests. Spray the roses when aphids or spider mites have infested the leaves.