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Can You Grow Collard Greens in Oklahoma?

US · USDA Zone 7a · zones 6a, 6b, 7a, 7b

Grows well here

Collards are well-suited to your zone — they handle summer heat and frost alike.

Plant zones

5a–11b

Oklahoma last frost

early March

Oklahoma first frost

late November

Days to harvest

60–80 days

When to plant Collard Greenses in Oklahoma

Start indoors

Feb 7

Transplant

Mar 7

Harvest

May 6 – May 26

Dates are approximate, based on Oklahoma's average frost dates. Your exact yard may vary by microclimate.

About Collard Greens

Collard greens are a Southern staple — extremely hardy, tolerating both frost and summer heat better than most brassicas. Rich in nutrients and one of the most productive greens per square foot.

Start indoors 4-6 weeks before last frost or direct sow. Harvest lower leaves as needed. Plants withstand hard frosts — flavor improves after cold snaps. In warm zones, grow as a fall/winter crop.

Full collard greens growing guide →

Gardening in Oklahoma

Oklahoma ranges from Zone 6a in the Panhandle to Zone 7b in the southeast. Hot summers and mild winters. Long growing season for warm-season crops.