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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.
© RHS 1988
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Other common names
catmint 'Six Hills Giant'
Nepeta × faassenii 'Six Hills Giant' Nepeta × gigantea hort.
Nepeta can be annuals or, more commonly, perennials, with paired, usually aromatic leaves, and terminal spikes or panicles of 2-lipped, tubular flowers
'Six Hills Giant' is a vigorous perennial forming a clump of aromatic, grey-green leaves, with lavender-blue flowers in spikes in summer
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 East-facing or West-facing
Exposure Exposed or Sheltered
SoilClay, Loam, Chalk, Sand
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in any well-drained soil in full sun or partial shade. May need support
Propagate by division in spring or autumn. Propagate by softwood cuttings in early summer
Suggested planting locations and garden types
Drought Resistant Flower borders and beds Underplanting of Roses and Shrubs
Cottage & Informal Garden Wildlife Gardens Gravel Garden
Pruning Trim after flowering to keep plants compact and to encourage a second flowering
Pests May be attacked by leafhoppers
May be subject to powdery mildews
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
catmint 'Six Hills Giant'
Buy from £17.97 at the RHS Plants Shop
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Join the RHS today and get 12 months for the price of 9