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Leaf Spot in Japanese Maple
How to identify and treat leaf spot in Japanese Maple.
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Japanese Maple care requirements
water
Regularly when young. Drought-tolerant when established.
soil
Moist, well-draining, slightly acidic soil.
light
Dappled shade to morning sun. Protect from scorching afternoon sun.
symptoms
Symptoms to look for in Japanese Maple
Small brown or purplish spots on leaves, sometimes with a yellow halo, occasionally merging into larger blotches in humid conditions.
help
Common causes in Japanese Maple
Fungal leaf spot thrives on wet foliage in humid, still air, and Japanese Maple's fine, delicate leaves are more susceptible to fungal entry than tougher-leaved trees.
healing
How to treat leaf spot in Japanese Maple
Remove and destroy affected leaves, improve airflow by thinning dense growth, and apply a fungicide if spotting is spreading significantly.
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Preventing leaf spot in Japanese Maple
Water at the soil level rather than overhead, prune to maintain an open canopy for airflow, and clean up fallen leaves each autumn.