coronavirus
Black Spot in Crab Apple
How to identify and treat black spot in Crab Apple.
potted_plant
Crab Apple care requirements
water
Moderate watering during growing season; water deeply but infrequently; drought-tolerant once established.
soil
Well-drained loam or sandy soil; pH 6.0–7.5; tolerates slightly acidic to neutral conditions.
light
Full sun; requires at least 6 hours of direct sunlight for optimal flowering and fruiting.
symptoms
Symptoms to look for in Crab Apple
- fiber_manual_recordCircular black spots on rose leaves
- fiber_manual_recordYellow leaf halos
- fiber_manual_recordPremature defoliation
help
Common causes in Crab Apple
Caused by Diplocarpon rosae. Spreads in wet conditions.
healing
How to treat black spot in Crab Apple
Remove infected leaves. Apply rose fungicide. Repeat weekly in wet weather.
shield
Preventing black spot in Crab Apple
Choose resistant rose varieties. Water at base. Good air circulation.