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Draba longisiliqua
  • RHS AGM

long-podded whitlow grass

D. longisiliqua is a cushion-forming evergreen perennial to 8cm in height, with dense rosettes of grey-hairy, obovate leaves and bright yellow flowers 10mm across borne in short racemes on slender stems just above the foliage

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Size
Ultimate height
Up to 10cm
Time to ultimate height
5–10 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Yellow Green Grey Silver
Summer Green Grey Silver
Autumn Green Grey Silver
Winter Green Grey Silver
Position
  • Full sun
Aspect

South–facing or East–facing

Exposure
Exposed
Hardiness
H5
Botanical details
Family
Brassicaceae
Native to the UK
No
Foliage
Evergreen
Habit
Matforming
Genus

Draba can be annuals or evergreen perennials, with rosettes of small leaves forming compact cushions or mats, and short racemes of small, 4-petalled flowers in spring or early summer

Name status

Correct

Plant range
Caucasus

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How to grow

Cultivation

Grow in gritty, moist but very well-drained soil in full sun. Protect from winter wet and water carefully to avoid wetting the foliage. Usually grown in rock garden or scree, or in pots in an alpine house

Propagation

Propagate by seed sown in an open frame in autumn; they need exposure to cold to germinate. Propagate by rooting rosettes in late spring

Suggested planting locations and garden types
  • Patio and container plants
  • Rock garden
  • Gravel garden
Pruning

No pruning required

Pests

Prone to aphids and glasshouse red spider mite when grown under glass

Diseases

Generally disease free

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