Cleome hassleriana (spinosa) 

(clee-o’me hass-lair-ee-aa’nah)

Common name: Spider Flower

Family: Capparidaceae, Caper

Height x width: 3-5’ tall x 3-5’ wide

Growth rate: moderate to fast

Foliage: 5-7 palmate, glandular hairs, minute teeth on margins; leaflets ovate to lanceolate to 5" long; spines at leaf stalk bases

Flowers: white, pink, or purple; scented; long stamens make flowers resemble spiders, over 1" across and 2-3" long, in terminal racemes of many florets; flowers are long lasting

Hardiness: annual

Soil: most, well-drained

Light: sun

Pests and Problems: aphids, spider mites and whiteflies especially as seedlings indoors; fungal spots, rusts, pwdery or downy mildew occasionally outdoors

Landscape habit, uses: back of borders, massed, spaced with other annuals underplanted, cut flowers, temporary shrub; good for hot climates; generally withstands wind without staking

Other interest: native to South America;

Other culture: keep well-watered if dry

Propagation: seeds sown indoors 6-8 weeks before last frost, or in warmer climates outdoors after frost

Cultivars: all are commonly seen
 
Cultivar flowers
Colour Fountain Mix mix
‘Helen Campbell’ white
Queen Hybrids various or mix


©Authored by Dr. Leonard Perry, Professor, University of Vermont as part of PSS123 course.

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