flower

Sunflower

Direct-sow after frost. Mammoth for the fence line, branching types for cutting.

Sun
Full sun
Spacing
12–24 in
Days
70–90
Zones
3a–11a
BeginnerDirect sow

How to sow

Direct-sow after frost, 1 inch deep. Stake mammoth types.

Harvest

For seed, wait until the back of the head is yellow-brown and the birds have not found it.

Mistakes that waste a packet

  • Starting indoors and getting stretched plants
  • A windy site with no stake

Three packets

Partner links may earn us a commission. We do not warehouse these packets. See indoor start dates for your ZIP.

Related

The sow list

A note when it is time to sow

Seasonal, not daily. We will send what to start in your zone, and skip the rest of the year.

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