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Signs of damage
The most widespread fungal diseases are powdery mildew, botrytis, fungal leaf spots, and rust. Sometimes fungus can also cause root rot.
- The set of symptoms for each disease is very different, which makes identification easier.
- Black spot fungus gradually turns the leaf yellow and creates black spots on the foliage.
- Powdery mildew is distinguished by white and powdery growth resembling sugar powder on new leaves and shoots.
- Botrytis creates gray fuzzy mold on leaves and flowers.
- Rust causes red, bumpy spots on the surface of the leaves with orange blisters on the undersides.
How to prevent
Good gardening habits and effective treatment help prevent, stop and control fungal disease
- Start by planting healthy stock.
- Choose planting sites based on plant needs.
- Avoid overhead watering.
- Water early in the day.
- Don't crowd plants.
- Don't work a wet garden.
- Treat with a trusted, proven fungicide.
Fungus thrives in wet and damp conditions with bad ventilation. Take precautions to avoid overwatering: water according to care requirements for the species, use a pot with drainage holes and an appropriate soil mix. Do not place a plant in a crowded place with stuffy air. Your plant should enjoy air circulation around it (but not cold drafts!). Remove dropped leaves and other dead plant parts from the pot.
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