Strawberry powdery mildew
If the temperatures exceed 18 degrees, it starts. Now there are perfect conditions for powdery mildew spores to spread explosively. An infected strawberry plant has a white fungus coating on the underside of the leaves. As a result, the foliage turns purple to red-brown and curls up. The fruits are then attacked. They do not ripen under the whitish patina, but rot and fall off.
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Combat
- cut off all diseased plant parts
- Spray every 3 days with a milk-water mixture in a ratio of 1: 4
- alternatively, dissolve 1 tablespoon of soda in 4 liters of milk with 15 milliliters of curd soap
Gray rot
The pathogens of the fungal infection Botrytis cinerea do their ominous work in humid and warm weather. The unripe strawberries turn brown and soften. In the further course, they are covered with a gray-white mold fluff.
Combat
- Remove fruit mummies immediately
- sprinkle endangered plants with rock flour
- Add nettle liquid and onion extract to the water
- consistently weeding and mulching with straw
An airy planting distance has a preventive effect on all fungal infections so that the foliage can dry off quickly after a downpour. In addition, the location should be as sunny as possible.
White and red spot disease
These insidious fungus pathogens wait until just before the fruit ripens in order to thoroughly spoil the joy of fruity strawberry enjoyment. The foliage is covered with white or red-brown spots. The plant is so weakened that the fruits do not ripen. No preparations are available for immediate control. Careful prevention with the following measures is helpful:
- do not give nitrogen-stressed fertilizers
- After flowering, mulch with straw or bark
- Plant strawberries in mixed culture with garlic
- cut off all runners in autumn and burn them
- Do not leave any leaves in the bed, as the spores overwinter here
Tips & Tricks
Strawberry plants strengthened with liverwort extract are significantly more resistant to fungi and bacteria. The purely natural preparation uses the defense substances of mosses, which come from an evolution that has lasted 35 million years. 5 milliliters of liverwort extract are dissolved in 1 liter of water and sprayed onto the plants every 10-14 days from the start of culture.
