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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 early crocus
Family Iridaceae
Genus Crocus are dwarf, deciduous perennials growing from a corm, with linear leaves usually with a silvery central stripe, and goblet-shaped, sometimes fragrant flowers in autumn or early spring
Details C. tommasinianus has long-tubed flowers which appear in early spring, as the narrow leaves emerge; the flowers vary from lilac to deep purple, sometimes paler outside
Plant range SE Europe
Foliage Deciduous
Habit Tufted
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H6
Full Sun
Aspect South-facing or North-facing or West-facing or East-facing
Exposure Exposed or Sheltered
Chalk
Clay
Sand
Loam
MoistureWell-drained
SoilChalk, Clay, Sand, Loam
pHAcid, Alkaline, Neutral
Ultimate height Up to 10 cm
Ultimate spread 0-0.1 metre
Time to ultimate height 2-5 years
Cultivation Grow in a gritty, poor to moderately fertile soil
Propagation Propagate by seed, sown in pots in a cold frame when ripe or remove cormlets when dormant
Suggested planting locations and garden types Flower borders and beds City & Courtyard Gardens Gravel Garden Patio & Container Plants Rock Garden Wildflower meadow
Pruning No pruning required
Pests Corms are vulnerable to mice, voles and squirrels
Diseases Generally disease free, corms may rot in storage
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
early crocus
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