Growing Lettuce in Zone 7b
A complete, zone-7b timeline for Lettuce — when to start, transplant, and harvest, tuned to this zone's typical frost dates (Richmond, Oklahoma City, Nashville).
Your planting timeline
- Direct sowonce soil warms, around April 3
- Harvestabout 30–70 days from transplant
Best varieties for zone 7b
Most varieties thrive in spring and fall; add slower-bolting types like Jericho romaine to push later into warming weather.
Growing notes
Lettuce has shallow roots and high water content, so it wants steady, even moisture — roughly 1 to 1.5 inches per week, delivered as light, frequent waterings rather than occasional soakings. Let the bed dry out and growth stalls while the leaves turn tough and bitter and bolting speeds up. Water at the base in the morning so foliage dries quickly, which discourages downy mildew and rot in the dense, tender leaves. A thin mulch of straw conserves moisture and keeps soil cool around the roots. Container and raised-bed lettuce dries fastest and may need watering daily in warm weather. Consistency is everything: erratic wet-then-dry swings produce bitter, stringy leaves.
Recommended supplies
- A seed-starting kit
- A raised garden bed kit
- Frost cloth for cold snaps
- A sturdy hand trowel
- A long-spout watering can
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