Purple coloured plants started coming into vogue last year and are therefore expected to feature strongly in the year ahead.
Beth Chatto's predicted top selling plants in 2015 include:
Verbena officinalis var. grandiflora 'Bampton'
This recently introduced Vervain looks set to increase in popularity this year. Its purple-tinted tinted foliage lasts all summer long, and compliments beautifully its airy, lavender-pink flower spikes. It thrives in full sun and is ideal in patio container displays.
This has sold in ever increasing numbers last year and its appeal shows absolutely no signs of slowing up. This favourite dark-leaved sedum is an exceptional German introduction of the easy to grow Ice plant. With mounds of slate-purple foliage clothing short, stiff stems and topped with closely knit, dusky-pink flower heads. It likes hot and dry conditions, and is naturally drought resistant.
Geranium phaeum 'Misty Samobor'
This was only introduced last year and was an instant hit. The centres of each leaf are boldly splashed with purple-black. The flowers of this cultivar are an unusual, subtle mix of cream and lilac-pink. An easy plant for sun or shade that can even survive in dry shade. This plant is only available from Beth Chatto Gardens.
Symphotrichum laterifolium 'Prince'
The aster genus has been given a recent shake up, spawning several new genera. Prince is one of the few asters grown as much for its foliage as its flowers. Its leaves are especially dark in the spring and a make perfect foil for its tiny pink and white autumn daisies.
These have fantastic winter foliage when grown in an open, sunny spot, but are wasted if tucked away in a shady corner. B. 'Abendgloken' is one of the best cultivars with mahogany coloured leaves over winter followed by dark pink flowers in April. Over summer the green, leathery foliage is an ideal contrast to plants of differing form and texture.
David Ward, Garden and Nursery Director at Beth Chatto Gardens, said: "Gardens, like homes, are subject to passing fashions. Gardeners are on the constant look out for the next hottest plants, wanting something different and interesting that isn't available at their local garden centre.
"That said, value for money is certainly going to remain a key driver next year. The gardening public is increasingly seeking plants that are not only unusual, but also providing all year interest. This is why the form, shape and structure of foliage is as important as flowers at the moment."