Aaron's Beard with Grey Mould? Rare but Treatable
Hypericum calycinum
Grey Mould on Aaron's Beard: What to Know?
Grey Mould on Aaron's Beard (Hypericum calycinum) is a fungal condition with moderate severity. Aaron's Beard has low susceptibility to this disease.
Aaron's Beard is a easy-care plant.
Unlike most plants, Aaron's Beard has natural resistance to Grey Mould. Best treated with preventive measures rather than reactive treatment. Unlike bacterial infections, Grey Mould on Aaron's Beard can be managed with organic fungicides. Without precautions, chemical treatments for Grey Mould can be harmful to pets. Use organic methods for Aaron's Beard in pet-friendly homes.
🌱 How to Care for Aaron's Beard to Prevent Grey Mould?
💧 How to Water
Water deeply but infrequently, letting the top of the soil dry out between waterings. Established plants are quite drought tolerant; reduce watering in winter to avoid waterlogged roots.
☀️ Lighting
Best flowering occurs in full sun, but Aaron's Beard tolerates partial to fairly deep shade better than most flowering shrubs, making it useful under trees.
🪴 Ideal Soil
Adapts to nearly any soil type as long as drainage is good; prefers a slightly acidic to neutral pH (5.5-7.0). Avoid waterlogged or heavy clay soils.
Frequently asked questions
Can Grey Mould kill my Aaron's Beard?
Is Grey Mould contagious to other plants near Aaron's Beard?
Sources & References
- Definitive guide on Hypericum calycinum: care, uses and curiosities
- Hypericum (St. Johnswort)-Rust | PNW Plant Disease Management Handbook
- Toxic and Non-toxic Plants: St. John's Wort | ASPCA
- Hypericum calycinum - Plant Finder | Missouri Botanical Garden
- Hypericum calycinum (Aaron's Beard) | NC State Extension Gardener Plant Toolbox
- Hypericum calycinum | Landscape Plants | Oregon State University