Seed - Cleome Helen Campbell


1 RHS Cleome Helen Campbell seed pack 

(Botanical name: Cleome hassleriana

Pack Size 250 seeds


Tall, bushy plants with large and extremely intricate flower heads that give rise to its common name the ‘Spider Flower’. Established plants are drought tolerant and the flowers are great for attracting beneficial insects. The long-lasting blooms are lovely dotted around the back of sunny borders. Easy to grow and ideal for home gardeners.

Winner of an RHS Award of Garden Merit for reliability and good performance.

Plant Height: 120cm Spread: 45cm.

How to Grow:

Sow thinly 5mm (1/4in) deep, firm gently and keep moist. Seedlings appear in 14-21 days.

Gradually thin seedlings out to 45cm (18in) apart. Keep well-watered and weed free.

When to Sow/Plant Seed:

Early Spring to Summer


12-14 weeks

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