Key plants in Green Islands

The diverse range of plants included within the design composes a sustainable, harmonious and aesthetically pleasing palette with carefully selected species and varieties chosen for their colour, form and texture

Betula platyphylla

© David J. Stang

Can create various atmospheres as the seasons change. In spring, light green flowers that resemble tulips. In summer, large dark green leaves create greenery and shade. The dark green leaves of autumn can suddenly turn yellow in response to temperature differences. In winter, it bears fruit after the flowers wither. The fruit stands out like a flower, so even if it snows, it can create a spectacle like a pure white cotton flower.

Cornus florida ‘Cherokee Chief’

The beautiful flower of the wild rose blooms before new leaves sprout in early spring. The beautiful colours of the petals are dazzling. The fruit of the dogwood tree is edible. 

Cerastium tomentosum

Thriving in those hot, sun-baked spots where little else will grow, this creeping groundcover will soon form a dense mat of silver foliage, which from late spring to midsummer will be studded with a profusion of white flowers. 

Erigeron karvinskianus

A plant that carries the wind. The flowering period is long and the colour and texture appear different depending on the flowering time. 


Moss is a key material that plays the most important role in the garden. There are over 600 species of moss in the UK, some of which are endangered. Mosses may form large, coarse, loose, green or yellowish-green tufts, densely matted tufts, or compact green cushions.

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The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.