Kale

Growing Kale in Zone 8a

A complete, zone-8a timeline for Kale — when to start, transplant, and harvest, tuned to this zone's typical frost dates (Atlanta, Dallas, Portland OR).

March 31Last spring frost
November 7First fall frost
about 221 daysGrowing season
10 to 20°FWinter low

Your planting timeline

  1. Start seeds indoors~5 weeks before last frost (around February 24)
  2. Direct sowonce soil warms, around March 31
  3. Harvestabout 50–75 days from transplant

Best varieties for zone 8a

Favor heat-tolerant, slow-bolting types like Lacinato and Red Russian, sowing mainly for fall and winter to dodge the worst summer heat.

Growing notes

Kale wants steady, even moisture — roughly 1 to 1.5 inches of water per week from rain or irrigation. Consistent watering keeps the broad leaves sweet, tender, and fast-growing; let the bed swing dry and the leaves turn tough, fibrous, and bitter while the plant is pushed toward bolting. Water deeply at the base in the morning so the foliage dries quickly, which discourages the downy mildew and leaf spots that settle into kale's crinkled leaves. A few inches of straw or shredded-leaf mulch conserves moisture and keeps the roots cool through warm spells. Container and raised-bed kale dries out fastest and may need watering more often in hot weather, while overwintered plants need far less in cold months.

Recommended supplies

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