Yes, do check all the Johnny's greens/lettuce for heat tolerant varieties. I have many and plant thick all summer in rotation with shade frames as i have full sun. I'm always adding new varieties to try so no named varieties to mention as most do well.
I'm probably a bit cooler being in the mountains but do give some salads a small bed to try. Planting thick keep the soil cool with some shade.
We are expecting some hot temps hitting 90 next week but i'll still put in another row. Cutting the sun in half helps.
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