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Rust in Chrysanthemum
How to identify and treat rust in Chrysanthemum.
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Chrysanthemum care requirements
water
Keep soil consistently moist during growth and flowering; reduce watering in winter dormancy. Water at soil level to avoid wetting foliage.
soil
Well-draining, fertile soil with pH 6.0–6.5. Amend with compost or peat moss for better structure.
light
Full sun (6–8 hours daily); flowering is enhanced by shorter daylight hours in autumn.
symptoms
Symptoms to look for in Chrysanthemum
- fiber_manual_recordOrange or brown pustules on leaf undersides
- fiber_manual_recordYellow spots on leaf tops
- fiber_manual_recordPremature leaf drop
help
Common causes in Chrysanthemum
Caused by various Puccinia and Phragmidium species. Spreads via windborne spores in moist conditions.
healing
How to treat rust in Chrysanthemum
Remove and destroy infected leaves. Apply copper or sulphur fungicide.
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Preventing rust in Chrysanthemum
Avoid overhead watering. Space plants adequately. Clear debris.