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Heat-Tolerant Lettuce and Radish Stress in DC Spring Swings

Peter in DC: lettuce varieties for 90°F+? 'Anuenue' (Hawaiian "rainbow") germinates above 80°F. 'Four Seasons' butterhead also heat-tolerant. Plant under shade cloth, ¼ in deep, 12 in rows, thin to 12 in. Drip irrigation daily 20 min. Shade netting prevents bolting/bitterness.

Cherry Belle radishes stressed by cold (50s) then heat (80s–93°F)? Yes—sudden shifts hurt cool crops. Use same shade cloth/light shade. Keep soil moist. They'll recover in 70s.

Spring swings are the new normal. Adapt with shade and water.

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