Powdery mildew
The real one spreads as a fair weather mushroom mildew in warm and dry conditions in summer. When the eucoat is infected, a white coating appears on the upper side of the leaf. It has a floury consistency and can be easily wiped off. When the infestation spreads, the surface takes on a brownish color. The leaves dry up from the edge inwards and slowly die off.
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Since the fungus tends to hibernate, it should be combated thoroughly. Silica-containing agents are suitable for this. As a preventive measure, several sprayings with field horsetail or nettle stock are recommended. If the leaves are affected, you should spray a solution of milk and water on the affected leaves every two days. Severely affected leaves are removed.
Wrong mildew
This mushroom is considered a bad weather fungus because it needs moist and cool conditions to grow. The downy mildew spores settle on the underside of the leaf. The fine mushroom mycelium penetrates the leaves. There are light discolorations on the upper side of the leaf. The leaves will dry up over time if the fungus is not controlled.
Unlike powdery mildew, this fungus does not overwinter on the bushes, but on the fallen leaves. In the next spring, the spores can infect the freshly sprouted leaves again. A brew with Field horsetail strengthens the plant and prevents infestation. When watering, be careful not to get the leaves wet. Silicic acid-containing agents have a fungicidal effect.
rust
Yellow to orange spots on the leaves indicate an attack by the rust fungus Melampsora evonymi-caprearum. The fungal network runs through the leaves, which can die in the event of severe infestation. Rust fungi rob the plants of nutrients. Typically, ephemera can cope with an infestation without taking much damage.
Prevent rust fungus infestation:
- Examine plants regularly during wet weather
- Remove infected leaves at the initial stage
- water only at the base of the trunk
- Pay attention to a balanced supply of nutrients
