Join the RHS today and support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Make a donation
I have forgotten my password
Keep me signed in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
Begin a new search
All ratings refer to the UK growing conditions unless otherwise stated. Minimum
temperature ranges (in degrees C) are shown in brackets
AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
'Cerro Potos?' is an evergreen shrub to 90cm tall, with neat, aromatic, light green leaves and and magenta-pink tubular flowers from mid summer to late autumn
'Kew Red' is a bushy sub-shrub with aromatic, ovate leaves and two-lipped crimson flowers 2.5cm in length, in racemes to 10cm in length, in late summer and autumn
S. viridis is an annual sage, grown primarily not for its insignificant flower, but for the colourful bracts borne on upright stems in summer. These modified leaves are blue, pink or white. Seeds of cultivars are available in single colours or blends
'Tricolor' is a spreading evergreen sub-shrub with oblong grey-green leaves variegated with cream and flushed with purple on the youngest growth; light blue flowers open in early summer
'Wendy's Wish' is a herbaceous perennial, up to 1m high, with red stems, aromatic, pale olive-green leaves and abundant, citrus-scented, rich pink flowers with darker pink calyces from midsummer to autumn
'Rubin' is a clump-forming perennial with narrowly ovate leaves and erect stems bearing slender racemes of small pale pink flowers with purplish lower lips, in summer and early autumn
S. lavandulifolia is a compact subshrub or woody-based perennial, to 60cm tall and wide, with narrow, grey-green, downy leaves and, in summer, spike-like racemes of violet-blue flowers
'Pleasant View' is a bushy sub-shrub with small, ovate leaves and spike-like terminal racemes of two-lipped, bright purplish-pink flowers in late summer and autumn
'Purple Rain' is an upright perennial with lyre-shaped leaves and small, reddish-purple flowers borne in long, dense, interrupted spikes on reddish stems in summer
'Raspberry Royale' is an evergreen sub-shrub with aromatic, ovate leaves and terminal racemes of two-lipped, deep raspberry-red flowers 2cm in length over a long period in summer and autumn
Choose from hundreds of plants, bulbs, seeds and gardening products from our online shop.
Save now on all plants
& bulbs from the RHS Plants Shop
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.
Join the RHS today and get 12 months for the price of 9