How much sun do they need?

Most prefer dappled shade to protect their delicate leaves from burning.

Can I grow them in pots?

Yes, they thrive in containers if you use well draining soil and keep them watered.

Plant guide

Japanese Maple.

Acer palmatum

Pronounced AY-ser pal-MAY-tum

Also known as Japanese Maple, Palmate Maple, Purple Japanese-Maple, Smooth Japanese Maple, Smooth Japanese-Maple, japanese-maple

The Japanese Maple is a graceful, slow growing tree prized for its delicate, deeply lobed leaves. It brings a touch of elegance to any garden with its stunning seasonal color shifts. These trees thrive in sheltered spots that protect their foliage from harsh winds.

At a glance

Care level: Moderate
Plant type: Deciduous tree
Light: Partial shade to dappled sunlight
Indoor light: bright-indirect
Water: Every 3 to 7 days
Mature size: 6 to 10 meters
Growth rate: slow
Hardiness: USDA 5 to 9
Bloom time: Mid spring

Care

Keep the soil consistently moist but never waterlogged to prevent root issues. Watch for scorched leaf edges, which often signal too much direct sun or low humidity. A layer of mulch helps keep the roots cool during the heat of summer.

Watering: Water deeply when the top inch of soil feels dry.
Feeding: Apply a balanced, slow-release fertilizer once in early spring.
Pruning: Prune only to remove dead or crossing branches during the dormant winter season.
Repotting: Repot in early spring before new growth begins if the roots become crowded.
Soil: Well-draining, slightly acidic, organic-rich soil
Soil pH: Acidic to neutral
Temperature: -20 to 35°C
Humidity: 40 to 60%
Drought tolerance: low
Lifespan: Perennial, typically 50 to 100 years.
Deer and rabbits: moderate

Signs it needs repotting

Roots growing out of the drainage holes.
Water sitting on the surface for too long.
The tree appears stunted despite regular care.
The root ball has become extremely tight and dense.

Safety

People: This plant is non toxic to humans.
Pets: This plant is non-toxic to cats and dogs.
Children: The small, winged seeds are a potential choking hazard if swallowed by young children.
Contact allergens: Some individuals may experience mild skin irritation from the sap.
Airborne allergens: The pollen can be a minor trigger for those with seasonal allergies.
Edibility: While not considered toxic, the leaves are not typically consumed by humans and offer little nutritional value.

How to identify it

Deeply lobed palmate leaves
Delicate, slender branches
Vibrant autumn foliage colors
Small, inconspicuous spring flowers

Height: 2 to 10m
Spread: 1.5 to 6m
Leaves: green, red, purple, bronze, deciduous
Flowers: red, purple, yellow, 0.5 to 1cm

Common problems

Verticillium wilt — A soilborne fungus that causes sudden wilting and branch dieback.
Aphids — Small insects that suck sap from new growth and cause leaf curling.
Leaf scorch — Brown, crispy leaf edges caused by too much sun or wind exposure.

Growing it

Propagation: cuttings, grafting, seed
When to plant: spring, autumn
Overwintering: In cold climates, move pots to a sheltered area or wrap them to prevent root freeze. Ensure the soil stays slightly moist but not soggy during the winter months.
In containers: They are excellent for containers, but ensure you use a pot at least 15 to 20 inches wide with good drainage.

Softwood Cuttings

Take 4 to 6 inch cuttings in late spring.
Remove lower leaves and dip the base in rooting hormone.
Place in a moist, well draining potting mix.
Cover with a plastic bag to maintain humidity.
Keep in bright, indirect light until roots form.

Pair your maple with low growing, shade tolerant plants to create a lush, layered look.

Grows well with

Hosta — They share similar shade requirements and provide a nice contrast in leaf texture.
Japanese Forest Grass — This grass mimics the graceful, weeping habit of many Japanese maple varieties.
Ferns — Ferns thrive in the same moist, shaded conditions as the maple.

Keep away from

Sun loving perennials — Plants that require full sun will struggle in the shade provided by the maple.

Similar species

Fullmoon Maple — It has a similar growth habit but features larger, more rounded leaves.
Paperbark Maple — It offers beautiful peeling bark that provides interest when the leaves fall.

Science

Family: Sapindaceae
Genus: Acer
Order: Sapindales
Class: Magnoliopsida
Native range: Japan, Korea, and eastern China.
Conservation: Most cultivars are widely propagated, but wild populations in certain regions are protected.

They grow as understory trees in temperate forests, relying on filtered light to thrive.

Value to wildlife: early season nectar source
Pollinators: bees
Uses: ornamental specimen, bonsai subject, container gardening

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Moisture: 5/9
Nutrients: 5/9
Salinity: 2/9
Soil reaction: 5/9
Light: 4/9
Temperature: 5/9

Taxonomy resolved against GBIF.

Questions people ask

How much sun do they need?: Most prefer dappled shade to protect their delicate leaves from burning.
Can I grow them in pots?: Yes, they thrive in containers if you use well draining soil and keep them watered.

Where the name comes from

The name Acer is the Latin word for maple, while palmatum refers to the hand like shape of the leaves.

Good to know

Japanese maples have been cultivated in Japan for centuries.
They are a classic choice for traditional Japanese garden designs.
The leaves can range from deep purple to bright green and fiery red.
They are often used to create a sense of calm and balance in a landscape.

Is your japanese maple looking unwell?

This page is a general guide. Pocket Botanist diagnoses problems from a photo of your actual plant, works out watering for your light and conditions, and reminds you when care is due.

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.