Rhodanthemum gayanum
A semi-erect subshrub with grey-green leaves and daisy-like rose-pink or white flowers with a small brown centre.
Rhodanthemum catananche
A silver-grey leaved perennial with daisy-like cream flowers with a maroon stripe and a small yellow centre.
Rheum x hybridum ‘Timperley Early’
A good flavoured early rhubarb, suitable for forcing.
Rheum palmatum var. tanguticum
A bold perennial with jagged dark green leaves, reddish green when young. Tall stems of white, pink or crimson flowers.
Rheum palmatum ‘Atrosanguineum’
A bold perennial with dark green leaves, vivid crimson when young, purple-red beneath. Rich cerise-pink flowers.
Rheum palmatum
A bold perennial with dark green leaves, purple-red beneath. Creamy green to deep red flowers.
Rheum australe
A bold perennial with dark green rounded leaves, hairy beneath. Clusters of white to wine-red flowers on an erect stem in summer.
Rheum ‘Ace of Hearts’
A perennial with attractive heart-shaped very dark green leaves with red veins, purple-red beneath. Very pale pink flowers.
Reineckea carnea
An evergreen perennial with arching green leaves and fragrant deep pink flowers in late spring, rarely followed by red berries.
Rehmannia elata
A rosette-forming perennial with conspicuously veined mid-green leaves. Pretty semi-pendent pinkish purple flowers, spotted inside.
Ranunculus montanus ‘Molten Gold’
A mat-forming perennial with glossy dark green basal leaves. Stems of cup-shaped, shining bright yellow flowers in early summer.
Ranunculus gramineus
A clump-forming perennial with narrow glaucous green basal leaves. Stems of lemon-yellow flowers from late spring to early summer.