Ranunculus Aviv Yellow is a Persian buttercup with glowing lemon yellow flowers.
Luscious burgundy-black foliage and cheerful yellow buttercups.
Rheum alexandrae is a rare species of rhubarb from the mountains of China and Tibet with heart-shaped leaves and yellow flowers.
Rhodoendron sinogrande has the largest leaves of any rhododendron which can be three feet long and one foot wide.
Rhododendron 'Holden's Solar Flair' has medium-large, creamy-yellow flowers, with showy red marks in the throat.
Rhododendron 'Honey Butter' is a stunning semi-dwarf cultivar with incredible sunset shades of yellow, orange and pink.
Rhododendron 'Nancy Evans' has glowing orange buds opening to yellow flowers.
Ribes odoratum 'Crandall' is often called clove currant because of its sweetly fragrant flowers that occur in early spring.
Ribes rubrum 'Blanka' is a white currant from Slovakia with excellent production of very large, white, sweet berries.
Ribes rubrum 'Cherry Red' is a delicious red currant that is a prolific producer of large, red, sweet and flavourful berries.
Ribes rubrum 'Gloire des Sablons' is a choice pink currant with abundant crops of sweet, tasty pink berries.
Ribes rubrum 'Honeywood' produces large clusters of berries good for fresh eating or red currant wine.
Ribes rubrum Red Jade produces extra long, pendulous clusters of bright red currants that are very flavourful with a refreshing tartness.
Ribes rubrum 'Swedish White' is a white currant with large, white, sweet, flavourful berries in large clusters.
Ribes rubrum 'White Imperial' is a white currant with excellent production of flavourful, pink-tinged, white berries.
Ribes 'Friend' is thornless gooseberry from the Ukraine that produces tasty medium sized reddish pink berries.
Ribes uva-crispa 'Little Ben' is a compact gooseberry that produces tasty large sized red fruit.
Ribes 'Black Velvet' is a black gooseberry with large crops of delicious, high quality, purple-black to burgundy-black fruit.
Rohdea japonica is a beautiful and useful evergreen, subtropical-looking perennial from Asia tolerant of dry shade.
Rosa chinensis 'Mutabilis' has delicate single flowers that look like multicoloured butterflies perched amongst the red-tinged leaves.
Roscoea cautleyoides 'Jeffrey Thomas' has pale yellow flowers with a particularly large flower lip.