Datisca cannabina

RHS Plant Profile
Cretan hemp

Save a plant

Where do you want to save Datisca cannabina?

Plants I own
Wishlist
Go to My Plants
Cretan hemp RHS
Cretan hemp RHS
Herbaceous Perennial
Buy this from Plant Nurseries
9 Suppliers

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

Position

Full sun, Partial shade

Soil Types

Clay, Loam

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1.5-2.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

Clay Loam
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
West–facing or East–facing or South–facing or North–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Datiscaceae
Native to GB/Ireland
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

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