Sissinghurst White Poppy blooms on a white background.
Close-up Sissinghurst White blower blooms with ruler and foliage on white background.
Sissinghurst White Poppy growing in garden.
Sissinghurst White Poppy bunch in coffee mug.
Sissinghurst White Poppy blooms on a white background.
Close-up Sissinghurst White blower blooms with ruler and foliage on white background.
Sissinghurst White Poppy growing in garden.
Sissinghurst White Poppy bunch in coffee mug.

Poppy Seeds,
Sissinghurst White

4.310 ReviewsSKU: #FL946Min. seed count: 100
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Description

(Papaver somniferum). Breadseed type. A stunning gem plucked from one of the most beloved gardens in England. The pillowy soft, snow white petals of Sissinghurst White poppy originated in the famous White Garden at Sissinghurst Castle in Kent, England. All plants in this particular garden fall within the range of white, from cream colors to crisp snow white like this poppy. The color-blocked planting makes for a breathtaking effect. Two-to-three-foot-tall plants have dust-blue foliage and pods and large blooms that dance in the breeze like clouds across the sky. The plant collection at Sissinghurst Gardens is internationally respected. This is a treasure that we are delighted to see reaching gardens across the globe! Annual poppy that readily self sows.

Growing Tips: Sissinghurst White poppy grows best in full sun and moderately rich, loose, well-drained soil, making it a low-maintenance option for sunny borders or cottage gardens. These poppies are also drought-tolerant once established, though regular watering in the early stages will help them thrive.

Plant Details

Botanical Name
Papaver somniferum
Life Cycle
Annual
Sun Requirement
8–12 hr.
Days to Germinate
14–21
Days to Maturity
70–90
Planting Depth
Surface sow
Plant Spacing
12 in.
Ideal Temperature
60–65°F
Frost Hardy
Yes

When to Grow

Sow Sissinghurst White poppy seeds in early spring as soon as the soil can be worked or in fall for milder climates. Fall sowing allows the seeds to overwinter and germinate as temperatures rise. These poppies prefer cool weather and will bloom in late spring to early summer. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Surface-sow the seeds by scattering them on the soil and lightly pressing them in—just barely cover them, as they require light to germinate. Keep the soil moist until the seedlings emerge, which usually takes 14-21 days. Thin the seedlings to about 12 inches apart once they are a few inches tall​.

How to Grow

Sissinghurst White poppies grow up to 2-3 feet tall and benefit from regular watering during dry spells. Deadheading spent flowers will encourage more blooms, but if you want them to self-seed, leave some flowers to form seed heads. These seed pods are also decorative and can be dried for arrangements​.

How to Save Seeds

  • Poppies are mostly self-pollinating; however, small flies and honeybees may cross-pollinate closely planted varieties.
  • Often self-sows, but you can also harvest seeds when capsules turn brown and dry completely.
  • Save seed over winter in a cool, dark, dry place.

FAQ

Are Sissinghurst White poppies frost-hardy?

Yes, they can tolerate light frosts, making them suitable for sowing in fall.

Do Sissinghurst White poppies attract pollinators?

Yes, these poppies are attractive to bees and other pollinators, making them great for wildlife gardens.

When do Sissinghurst White poppies bloom?

They bloom in late spring to early summer, depending on when they are sown.

More Questions?

Check out our 'How to Grow Breadseed/Opium Poppy Seeds' guide.
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