fertile, moist but well-drained soil; tolerates almost any conditions; drains freely
Flowering
May–June
Toxicity
Seeds and seedlings cause atypical myopathy in horses, often fatal — keep horses away from sycamore seeds and saplings; not considered harmful to people. (RHS / equine sources.)
The Gardening Year
J
F
M
A
M
J
J
A
S
O
N
D
🪴 Plant out
🌸 In flower
✂️ Prune
Watch out for
Tar spot: Sweep up and dispose of fallen leaves to reduce spores; no chemical control is available.
Honey fungus: Improve drainage and avoid planting susceptible species in infected soil.
Verticillium wilt: Remove and burn affected branches; avoid replanting maples in the same spot.
Horse chestnut scale: Scrape off scales by hand or use a horticultural oil spray in winter.
Leaf scorch: Plant in partial shade or provide shelter from harsh winds and intense sunlight.