A picture of a Spider Flower

Spider Flower

Cleome houtteana

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Also known as

Spiderplant

Full Sun
Easy care
Moderate watering
Tender

H2

RHS hardiness

1°C

Minimum temperature

Expected size

Height
Spread

1.3m

Max

60cm

70cm

Min

30cm

6 months to reach maturity

Flowering

  • spring
  • summer
  • autumn
  • winter

This plant has no fragrance

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A photo of Spider Flower
A photo of Spider Flower
A photo of Spider Flower

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Spider Flower Overview

Cleome houtteana is a half-hardy annual that produces showy clusters of pink, purple, red and white flowers in summer which contrast attractively against the green foliage on hairy spiny stems. Commonly known as Spider Flower or Spider Plant, this species has been classified as Cleome spinosa and Cleome hassleriana and is still occasionally sold under these names. This species is part of the Royal Horticultural Society “Plants for Pollinators” initiative to showcase plants which support pollinator populations by providing ample amounts of nectar and/ or pollen. A great choice for encouraging pollinating insect wildlife into your garden!

Common problems with Spider Flower

How to harvest Spider Flower

Flowers can be cut for floral arrangements as required.

How to propagate Spider Flower

Seed

Sow indoors from Jan to April - Sow into 9cm pots or deep modular trays of pre-watered seed compost. These plants do not like their roots disturbed. Keep at 15-20C (60-68F) and keep moist. Germination should occur within 14 to 28 days. Grow on in cooler conditions, acclimatising plants before planting out after the last frosts. Space them 45cm (18") apart Direct sow outdoors in April or May - in a warm, sunny site with well drained soils. Thin seedlings to 5cm (2") apart and then again until a final spacing as above.

Special features of Spider Flower

Attractive flowers

Flowers are produced in clusters on large, spherical flowerheads with narrow petals and long, protruding stamens.

Attracts useful insects

Other uses of Spider Flower

These tall annuals make good additions to mixed flower borders adding architectural interest and a sub-tropical feel.

Garden Annuals

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