Purity

SKU: FL2398
Purity cosmos seeds yield single snow-white flowers to lighten the dark areas of a cottage garden. Regular dead heading will encourage continuous flowering from summer into late autumn. Read More

Exposure Full-sun

Shipping & Returns

West Coast Seeds ships anywhere in North America. However, we are not able to ship garlic, potatoes, asparagus crowns, bulbs, onion sets, Mason bee cocoons, or nematodes outside of Canada. We regret, we cannot accept returns or damages for orders outside of Canada. The minimum shipping charge to the US is $6.99.

More details about Purity

Cosmos bipinnatus. Purity cosmos seeds yield single snow-white flowers to lighten the dark areas of a cottage garden. Regular dead heading will encourage continuous flowering from summer into late autumn. The ferny foliage on this variety is graced by the flowers up to 10cm (4") in diameter on plants that grow to about 76cm (30") tall. Stake this variety if growing in exposed areas, or use Green Garden Netting to keep plants upright. When they are just two feet tall, let their tips grow through a layer of netting lain flat over the bed. This will give them all the support they need.

Annual

Quick Facts:

    • Hardy annual
    • Single snow-white flowers
    • Flowers up to 10cm (4") in diameter
    • Plants grow to 76cm (30") tall
    • Great cut flowers

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All About Purity

Latin

Latin
Cosmos bipinnatus & C. sulfureus
Family: Asteraceae

Difficulty

Difficulty
Very easy

Season & Zone

Season & Zone
Exposure: Full sun

Timing

Timing
Direct sow after the last frost date. Several sowings will result in a very long bloom period. Cosmos can also be started indoors in late winter for transplanting after last frost, once daytime temperatures are above 10°C (50°F). Seeds will sprout in 3-10 days. Optimal temperature for germination: 21-25°C (70-75°F).

Starting

Starting
Sow seeds very shallowly only a few millimetres (1/8″) deep. Thin or transplant to 20-25cm (8-10″) apart.

Growing

Growing
Most varieties can get quite tall, and in exposed or windy gardens can benefit from staking or trellis netting laid horizontally over the bed for the stems to grow through before blooming. Deadhead and cut for bouquets regularly to extend the bloom period.

How to Grow Cosmos

Step 1: Timing

Direct sow after the last frost date. Several sowings will result in a very long bloom period. Cosmos can also be started indoors in late winter for transplanting after last frost, once daytime temperatures are above 10°C (50°F). Seeds will sprout in 3-10 days. Optimal temperature for germination: 21-25°C (70-75°F).

Step 2: Starting

Sow seeds very shallowly only a few millimetres (1/8″) deep. Thin or transplant to 20-25cm (8-10″) apart.

Step 3: Growing

Most varieties can get quite tall, and in exposed or windy gardens can benefit from staking or trellis netting laid horizontally over the bed for the stems to grow through before blooming. Deadhead and cut for bouquets regularly to extend the bloom period.

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