Join the RHS today and support our charitable work
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
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.
A. megapotamicum is a deciduous or partially evergreen, medium-sized shrub to 2m, with tapering, narrowly ovate leaves, and pendulous, bell-shaped flowers with yellow petals and large crimson calyx, in summer and autumn
A. hispida is an erect evergreen shrub of open habit, to 2.5m in height, with large ovate leaves and pendulous fluffy red catkin-like flowerheads to 45cm in length, produced sporadically throuhout the year
A. palmatum is a variable small tree with small, deeply 5 to 7-lobed leaves often colouring well in autumn. Small red flowers in spring are followed by winged, red or green fruits
A. rubrum is a round-headed tree growing up to 30m tall. In spring, tiny red flowers are borne in erect clusters before the appearance of dark green leaves with whitish undersides. The leaves turn bright red in autumn
A. obesum is a succulent, shrubby perennial with very swollen stem-like caudex tapering to a branched apex bearing small clusters of red, pink or white flowers, which open before the ovate leaves
A. longicaulis is an evergreen perennial with trailing stems to 1m in length bearing dark green lance-shaped leaves and clusters of tubular orange-red flowers 5cm in length from summer to early winter
A. pulcher is a climbing evergreen sub-shrub to 70cm in height, with aerial rooting stems bearing oval leaves and terminal clusters of bright red tubular flowers 6cm in length, yellow in the throat
A. arborescens is a bushy, evergreen, multi-headed, succulent shrub to 4m tall. Stems are topped by rosettes of long, slender, curved, blue-green leaves with toothed margins. Racemes of tubular red flowers are borne from late winter into spring
A. aristata is an evergreen perennial to 20cm forming rosettes of fleshy lance-shaped leaves spotted with white and tipped with a soft white spine, with tubular, orange-red flowers 4cm in length in panicles to 50cm in length in autumn
A. plicatilis forms a shrub or small tree with a woody trunk and branches of spineless, strap-shaped, light green, to blue-grey leaves, to 30cm long, borne in fans. The tubular, vermillion flowers tipped with yellowish-green are borne at the end of upright flower spikes 30-45cm long from late winter to early spring
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.