Acers – Japonica Plants Nursery

One of the most evocative of Japanese plants, Acer palmatum cultivars are easy to grow as long as they are sited correctly. Whether in the ground or in containers they need shelter from cold or drying winds. Cool dappled shade is the ideal position. Green cultivars, and some purples, tolerate sun best. Red leaved cultivars need some sun, or the colour will not develop properly, but don’t like full sun all day. Variegated or more delicate dissectum and linearilobum cultivars will need shade at least during the hottest part of the day to prevent scorching and some, like ‘Ukigumo’, can only be grown successfully in shade.

They do best in a moist but well-drained soil with plenty of organic matter, ideally slightly acidic. In a container, the standard advice is to use John Innes 2 or 3, mixed with an ericaceous compost, but it is better for the environment to use a good quality peat free ericaceous, such as those available from Sylvagrow or Dalefoot. Top pots with gravel to suppress weeds, or mulch well with compost or leafmould in the ground, but make sure the mulch doesn’t touch the trunk. Feed with a balanced fertiliser in spring before the leaves emerge.

*Acer palmatum* ‘Omureyama’ starting to colour in autumn

Correct watering is important. They need a good supply of moisture, and won’t tolerate either drought or water-logging well. They are quite shallow rooted, so make sure they are not crowded by other plants competing with them. Besides, they are best given space to show off their beautiful form.

Emerging foliage of Acer palmatum ‘Katsura’

Acers are perfectly hardy, but in pots their roots are more vulnerable to frost, so in colder area the pots should be wrapped in fleece or moved to a protected spot in winter. Acers come into leaf very early in the year and the new foliage can be caught by late frosts. This won’t kill them but will set them back, so protect with fleece when frosts are expected.

Acers don’t need much pruning – simply removed dead, damaged or diseased branches, and any that are crossing and rubbing. Prune when the tree is dormant, between November and February, and be sure to cut back to just above a bud. A long stub left above a cut can be an entry point for disease or dieback.

One of the classic plants of the Japanese garden is the maple, Acer palmatum. The common Japanese names for maples are ‘momiji’ derived from ‘leaves turning red’ or ‘kaede’ derived originally from ‘frogs’ hands’. Autumn trips to the mountains to see the beauties of the changing leaf colours are called ‘momiji-gari’, maple leaf hunting.

Spring foliage of Acer palmatum ‘Katsura’ (meaning ‘wig’)

There are thousands of cultivars, many with poetic and beautiful names. Here are some Japanese words used in the names of Japanese maple varieties.

Ao – blue-green

Ba – leaves

Beni – deep red

Fu – variegated

Gasa – umbrella

Hime – princess or little

Ito – fine thread

Kin – gold

Koto – a stringed instrument

Maiko – dancing girl

Murasaki – purple

Nishiki – brocade, by extension variegated or textured

Niwa – garden

Ō – large

Ryū – dragon

Sango – coral

Sei – blue-green

Shidare – cascading

Shigure – soft rain

Ukigumo – floating clouds

Yae – double

Yama – mountain

Tag: Acers

How to grow Japanese Maples

Frogs’ hands and floating clouds – the names of Japanese Maples