Help us achieve our goals: make a donation »
General enquiries 020 3176 5800 Mon – Fri | 9am – 5pm
Make a donation
I have forgotten my password
Keep me signed in
Log in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
Begin a new search
Show filters
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Hide Filters
Refined by:
Sort by:
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.
'Hensol Harebell' is an erect herbaceous perennial to 90cm, with divided leaves tinted purple in late summer, and nodding, rich violet-blue flowers 5cm wide, with short, hooked spurs
'Genii' is an erect medium-sized deciduous shrub with yellow-green foliage. Flowers single, small, with narrow, up-curved cerise sepals, slender cerise tube and reddish-purple petals
'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
'Fireworks' is a slowly clump-forming, non-invasive, cultivar. It flowers in late summer through to autumn. Its sprays of tiny yellow flowers are held in finer wands than many of its more densely-flowered relatives
E. ritro is a robust, upright herbaceous perennial, with jaggedy-divided, prickly dark green leaves whitish beneath. Rounded, violet-blue flower heads on silvery, branched, leafy stems
T. tricolor is a summer-dormant, tuberous, perennial climber to about 1.5m with small, light green, five- or seven-lobed leaves. The small, yellow flowers are surrounded by a showy purple-tipped, orange-red calyx with a long red or purple spur, in all about 3cm long. Flowering takes place from winter to early summer
'Dainty Marietta' is a dwarf French marigold growing to 35cm in height, with pinnate green foliage and single, bright yellow flowers, each ray with a deep red blotch at the base, from late spring to autumn
'Cambridge Blue' is a compact annual to 15cm, forming a low hummock of narrow foliage, with clear light blue, two-lipped flowers 2cm across in summer and autumn
'Rodomont' is a trailing plant with stems to 30cm, and semi-double, deep rose-pink flowers, the lower petals streaked with purple
M. carmenae is a clustering cactus with globose stems to 8cm in height, the areoles with about 100 cream radial spines; white or pink-tinged flowers 1cm in length are borne towards the apex of each stem in spring and summer
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