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Herbaceous Perennial

Datisca cannabina

Cretan hemp

a tall, clump-forming herbaceous perennial, to 2m or more in height, with upright stems clothed in bright green, ash-like leaves, and arching over at the tips where they produce long, hanging tassels of tiny greenish-white flowers in summer

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Clay
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Green White Green
Autumn Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

West–facing or East–facing or South–facing or North–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Datiscaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Datisca are large herbaceous perennials with long leaves divided into many leaflets, and ball- or tassel-shaped clusters of green flowers in summer; male and female on separate plants

Name status

Correct

Plant range
Asia Minor to India

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How to grow

Cultivation

Grow in fertile, moist but well-drained soil in sun or semi-shade

Propagation

Propagate by seed or by division in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Flower borders and beds
Pruning

Cut stems down at the end of the season

Pests

Generally problem free

Diseases

Generally problem free

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