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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.
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Other common names New Zealand holly
Synonyms Olearia dentata
Family Asteraceae
Genus Olearia can be evergreen shrubs, small trees or herbaceous perennials, with simple, leathery, toothed or entire leaves and corymbs of daisy-like flower-heads
Details O. macrodonta is a vigorous medium-sized evergreen shrub with spiny-toothed, ovate, grey-green leaves, white-felted beneath, up to 9cm in length. Small, fragrant white flowers are borne in large clusters in summer
Plant range New Zealand
Foliage Evergreen
Habit Bushy
Fragrance Flower
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H4
Full Sun
Aspect South-facing or North-facing or West-facing or East-facing
Exposure Exposed or Sheltered
Chalk
Clay
Loam
Sand
MoistureWell-drained
SoilChalk, Clay, Loam, Sand
pHAcid, Alkaline, Neutral
Ultimate height 2.5-4 metres
Ultimate spread 2.5-4 metres
Time to ultimate height 10-20 years
Cultivation Grow in well-drained soil in full sun
Propagation Propagate by semi-hardwood cuttings
Suggested planting locations and garden types Hedging & Screens Low Maintenance Wall-side Borders Coastal Architectural
Pruning Pruning group 9
Pests Generally pest free
Diseases Generally disease free
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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.