Help us achieve our goals:
make a donation »
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
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.
'Silver Sparkler' is a spreading evergreen sub-shrub to 25cm tall, with narrowly oblanceolate leaves margined with creamy-white; white flowers 6cm across, violet at base, with a blue disk, open from late spring to autumn
'Blackthorn Seedling' is a bushy perennial with narrow foliage and, from late spring to autumn, daisy-like flower-heads to 6cm across, with deep pink rays surrounding a yellow disk
'Stardust' is an evergreen perennial with striking flowers with purplish-red ray florets, which are mauve on the underside, for a long period over the summer
'Hopleys' is a spreading perennial with olive-green, spoon-shaped leaves and flowerheads to 6cm across, the rays purplish-pink with a white base, the disk dark, becoming yellow
'Lady Leitrim' is a spreading perennial with narrow, dull grey-green leaves and flower-heads 6.5cm across, the rays white, with age becoming tinged with purplish-pink at base and tip, surrounding a yellow disk
O. jucundum is a rhizomatous perennial to 45cm in height, with narrow, aromatic grey-green leaves and solitary daisy-like, light pinkish-purple, dark-eyed flowers 5-6cm in width
'Buttermilk' is an evergreen subshrub to 45cm in height, with oblanceolate leaves and daisy-like flowerheads to 7cm across, ray florets light yellow fading to white at base, disk florets bluish-purple
'Pink Whirls' is an evergreen subshrub to 40cm in height, with lance-shaped, coarsely toothed leaves and purplish-pink, daisylike flowerheads 5cm across with ray florets pinched at the middle, spoon-shaped at tip; disk blue
'Merriments Joy' is a robust perennial with light green, narrow leaves and 6cm in width pinkish-purple flowerheads with yellow centres
'James Elliman' is a bushy perennial to 40cm tall, with broad, spoon-shaped basal leaves and reddish-purple flower heads 6cm wide, with a dark violet central disk, borne on reddish stalks from late spring to 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