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RHS Award of Garden Merit


imageA number of varieties introduced by Must Have Perennials™ over the years have been approved for The Royal Horticultural Society's Award of Garden Merit.

The Royal Horticultural Society (RHS) is the UK's leading gardening charity dedicated to advancing horticulture and promoting good gardening.

RHS Award of Garden Merit (AGM) indicates that the plant is recommended by the RHS, having been through rigorous trials. The RHS AGM is awarded only to plants that meet the following criteria:

- Outstanding excellence for ordinary garden decoration or use
- Available for general purchase
- Good constitution
- Do not require highly specialist growing conditions or care
- Are not particularly susceptible to any pest or disease
- Are not be subject to an unreasonable degree of reversion in its vegetative or floral characteristics

Plants awarded an AGM may range in hardiness, being hardy throughout the British Isles, or suitable only for cultivation under heated glass. Though growing conditions and plant types may vary, the purpose of the award is always the same: to highlight the best plants available to the home gardener.

Read more about the RHS Award of Garden Merit.

Must Have Perennials™ varieties holding an RHS AGM include


Aconitum Bressingham Spire 1993
Achillea Moonshine 1993
Bergenia Bressingham White 1993
Campanula Chettle Charm 2002
Crocosmia Lucifer 1993
Geranium Ann Folkard 1996
Geranium Ballerina 1996
Geranium Bevan’s Variety 2006
Geranium Blue Sunrise 2005
Geranium Rothbury Gem 2006
Geranium Rozanne 2006
Hebe Margret 2002
Helenium Butterpat 2001
Helichrysum Ruby Cluster 1995
Penstemon Mother of Pearl 1993
Penstemon Sour Grapes 2002
Persicaria Firetail 1993
Pulmonaria Lewis Palmer 1993
Salvia Indigo 1996

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