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.
We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
When using this search
Search by plant name, key attributes or both to find plant details and a list of
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.
the RHS today and get 12 months for the price of 9
Other common names
Helianthus can be tall, erect annuals, tuberous or rhizomatous perennials, with coarse simple leaves and large daisy-like flower-heads
'Earthwalker' is strong, vigorous annual, up to 3m high, with coarse green leaves and abundant, multi-headed flowers, in late summer, with dark brown centres and ray florets which may be rich yellow, terracotta orange, dark red or warm brown
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect South-facing or West-facing
MoistureMoist but well-drained
SoilChalk, Sand, Loam
Time to ultimate height
Sow in spring and grow in full sun in any fertile, well-drained, neutral, or preferably calcareous, soil. The flowers attract bees and other insects, and the edible seeds provide food for birds, especially finches
Propagate by seed sown in spring
Suggested planting locations and garden types
Flower borders and beds Cut Flowers Wall-side Borders
Cottage & Informal Garden Wildlife Gardens
Pruning No pruning needed
Pests May be affected by slugs and snails
May be affected by powdery mildews and sclerotinia diseases
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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