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Romanesco growing in a garden

How to grow romanesco

Brassica oleracea var. botrytis

When to plant romanesco

Start seeds indoors
6 weeks before your last spring frost to 4 weeks before your last spring frost
Transplant outdoors
at your last spring frost
Get your exact dates by ZIP

The windows above are relative to your frost dates.

Growing conditions

Lifecycle
Annual
Days to maturity
75 to 100 (from transplant)
Spacing
18 to 24 in apart
Sun
Full sun

Common problems

Romanesco by hardiness zone

Planting dates for a typical location in each zone:

Sources

Last updated .