Cynoglossum (Chinese Forget-Me-Not) in Zone 4a & 4b

Cynoglossum amabile

When to plant cynoglossum (chinese forget-me-not) in zone 4b

Zones 4a and 4b 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. Cynoglossum (Chinese Forget-Me-Not) tolerates either.

Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1.5-2 ft.

Cynoglossum, commonly called Chinese forget-me-not, is a true-blue cut flower similar in color to a garden forget-me-not but larger-flowered and considerably easier to grow from seed.

How cynoglossum (chinese forget-me-not) fits zone 4's season

Zone 4b's frost-free window runs about 128 days, from May 15 to September 20. Cynoglossum (Chinese Forget-Me-Not) needs about 75 days from sowing to first harvest.

Good companions

No standout companions recorded yet for Cynoglossum (Chinese Forget-Me-Not).

Where to buy cynoglossum 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 cynoglossum (chinese forget-me-not)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)

← Back to the full zone 4b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

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Growing Cynoglossum (Chinese Forget-Me-Not) in USDA zone 4b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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