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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.Acer palmatum Polymorphum is often considered the classic green-leaved Japanese maple, and is actually an older traditional name sometimes applied to seedling forms of Acer palmatum with green foliage (essentially the typical species type). It remains a favourite for its elegant shape, reliable growth, and stunning seasonal transformation.
Foliage: Broad, five- to seven-lobed palmate leaves emerge a fresh, bright green in spring, staying vibrant through summer. In autumn, they transform into a spectacular mix of gold, orange, and scarlet-red, often with multiple colours on the same tree.
Habit: Develops into a graceful, small tree or large shrub with an upright, spreading habit. Typically reaches 46 metres high with a similar spread over many years, forming a rounded crown that creates light shade beneath.
Bark: Smooth grey branches add gentle winter interest once the leaves fall.
Because of its clean, simple green foliage and outstanding autumn colour, Polymorphum is perfect for adding a tranquil yet dramatic element to gardens, whether in lawns, woodland edges, or Japanese-inspired schemes.
Prefers partial shade or dappled sunlight.
Tolerates some morning or early afternoon sun, which can enrich autumn colour, but avoid hot, exposed afternoon sun to prevent leaf scorch.
Plant in a sheltered spot, away from cold, drying winds.
Important to avoid exposed sites. Strong winds can dry or damage delicate leaf margins, causing browning.
Likes soil to be consistently moist but well-drained.
Water thoroughly during dry spells, especially when newly planted or if grown in containers.
Mulch in spring with bark or compost to conserve moisture and keep roots cool.
Prefers slightly acidic to neutral, fertile, humus-rich soil.
Avoid very alkaline or heavy clay soils. If needed, plant in raised beds or containers using ericaceous compost with added grit for drainage.
Feed lightly in spring with a balanced slow-release fertiliser or an acer-specific feed.
Avoid high-nitrogen fertilisers which encourage lush growth prone to wind and frost damage.
Requires minimal pruning.
Remove any dead, damaged or crossing branches in late autumn or winter while dormant.
Avoid hard cutting back, which can ruin its graceful, natural shape.
Generally very healthy and low-maintenance.
May occasionally see aphids on soft new shoots.
Leaf scorch (browned edges or tips) is usually caused by drought, strong wind or intense sun, not disease.
Works well in large pots, especially if garden soil is unsuitable.
Use ericaceous compost mixed with grit, ensure pots have good drainage, and raise on feet.
Water regularly, and protect container roots in harsh winters by wrapping or moving to a sheltered spot.
