Keep track of your plants with reminders & care tips – all to help you grow successfully
My plants
My calendar
My ideas
My advice
For the latest on RHS Shows in 2021, read more
North Yorkshire
Essex
Devon
Surrey
Greater Manchester
General enquiries 020 3176 5800 Mon – Fri | 9am – 5pm
Help us achieve our goals
Make a donation
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 suppliers.
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.
Join the RHS today and get 12 months for the price of 9
Other common names blue oat grass
Synonyms Avena candida Avena sempervirens
Family Poaceae
Genus Helictotrichon can be deciduous or evergreen grasses, forming compact tussocks of linear leaves, with erect or arching stems bearing panicles of flowering spikelets in summer
Details H. sempervirens is a dense tufted evergreen grass with rather rigid blue-grey leaves to 23cm in length. Small, straw-coloured spikelets are borne in large open panicles on erect stems to 1.4m in height
Plant range SW Europe
Foliage Evergreen
Habit Tufted
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H5
Full Sun
Aspect South-facing or North-facing or West-facing or East-facing
Exposure Exposed or Sheltered
Chalk
Clay
Loam
Sand
MoistureMoist but well-drained, Well-drained
SoilChalk, Clay, Loam, Sand
pHAlkaline, Neutral
Ultimate height 1-1.5 metres
Ultimate spread 0.5-1 metres
Time to ultimate height 2-5 years
Cultivation Grow in poor to moderately fertile, neutral to alkaline, well-drained soil
Propagation Propagate by division in mid-spring
Suggested planting locations and garden types Flower borders and beds Low Maintenance Coastal Architectural
Pruning Remove dead foliage and old flowered stems in spring
Pests Generally pest free
Diseases May be affected by a rust
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
blue oat grass
Buy from £7.99 at the RHS Plants Shop
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.