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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.
the RHS today and get 12 months for the price of 9
Other common names
penstemon 'Windsor Red'
Penstemon 'Cottage Garden Red' Penstemon 'Garden Red'
Penstemon may be deciduous or evergreen perennials or subshrubs, with simple, narrow leaves and racemes or panicles of bell-shaped or funnel-shaped flowers in summer and early autumn
'Windsor Red' is a semi-evergreen herbaceous perennial, 75cm high, with green leaves, and many rich red flowers with red and white throats from early summer to late autumn
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 or East-facing
MoistureMoist but well-drained
SoilLoam, Chalk, Sand
pHNeutral, Acid, Alkaline
Time to ultimate height
Grow in fertile, moist but well-drained soil in full sun or light shade in a position sheltered from frosts and drying winds; in autumn, cut plants down by two-thirds of their height and protect with a dry mulch; for more advice, see penstemon cultivation
Propagate by softwood cuttings in early summer or semi-ripe cuttings in midsummer, by division in spring, or by layering
Suggested planting locations and garden types
Flower borders and beds
Cottage & Informal Garden City & Courtyard Gardens
Pruning Deadhead to encourage a longer flowering season; in autumn, cut plants down to about a third of their height to prevent windrock but leave some protection from frosts; in late spring or early summer after new growth appears and after frosts are over, cut out old stems
Pests May be affected by slugs and snails, and by chrysanthemum eelworm
Generally disease-free but may be affected by powdery mildews and grey moulds
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.