Agrostemma (Corn Cockle) in Zone 11a & 11b

Agrostemma githago

When to plant agrostemma (corn cockle) in zone 11b

Zones 11a and 11b share the same average frost dates in our data, so this page covers both.

Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Agrostemma (Corn Cockle) tolerates either.

Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.

Agrostemma, better known as corn cockle, has a history as an unwanted weed in European grain fields before it found a second life as a deliberately grown cut flower. Its delicate, magenta-pink blooms on tall, wiry stems have the airy, cottage-garden look that's hard to get from a sturdier, more structured flower.

How agrostemma (corn cockle) fits zone 11's season

Zone 11b is frost-free in this dataset, so frost is not what limits the calendar here. What you can plant, and when, comes down to summer heat and daylength instead.

Good companions

No standout companions recorded yet for Agrostemma (Corn Cockle).

Where to buy agrostemma seeds

• Botanical Interests
• True Leaf Market
• Burpee
• High Mowing Organic Seeds

See why we recommend these suppliers →

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See it growing

Search YouTube for "growing agrostemma (corn cockle)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)

← Back to the full zone 11b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

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Growing Agrostemma (Corn Cockle) in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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