Featured Heat Tolerant
One of our heat tolerant lettuce varieties growing in the field.
Heat Tolerant
In our trials, we test and select varieties that can endure heat successfully. This includes heat-tolerant versions of cool-weather crops; for example, heat-tolerant lettuce, spinach, broccoli, and kale varieties that can help keep you in greens throughout the hot summer months. We also seek out highly heat-tolerant versions of warm-weather crops, such as heat-tolerant tomatoes with the ability to set fruit even during the summer heat of southern growing zones. Choose from a large assortment of heat-tolerant vegetable seed varieties to fill your seasonal planting slots. Not sure of what to choose for your growing zone? Our customer service team is ready to help.
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Grand Marshall Beefsteak Tomatoes
High-quality beefsteak that sets fruit in heat.
New! Sets fruit in heat.
78 Days
Early, heat-tolerant standard variety.
Early, heat tolerant.
21 baby; 38 full size
Early, heat-tolerant standard variety.
Early, heat tolerant.
21 baby; 38 full size
Heat-tolerant romaine for long, uniform hearts with good flavor.
Heat-tolerant romaine for hearts.
58 Days
Johnny's Exclusive
Adriana Butterhead Lettuce (Boston)
Heat tolerant dark green butterhead with broad disease resistance.
Heat tolerant dark green butterhead.
48 Days
Extra early and refined.
Extra early and refined.
21 Days
Impressive flavor for a summer-harvested carrot.
Impressive flavor for a summer-harvested carrot. Conventional seed with NOP-compliant pelleting.
70 Days
Best heat tolerance, ideally-suited for summer, early fall harvest.
Best heat tolerance.
71 Days
Heat loving salad and stir-fry green with mild Swiss chard flavor.
Heat loving salad and stir-fry green.
50 baby; 85 full size
Excellent heat tolerance and smooth, well-domed, very attractive heads.
Excellent heat tolerance.
57 Days
Bolt-, heat-, cold-tolerant pac choi for full or medium-size heads.
For full or medium-size heads.
45 Days
Impressive flavor for a summer-harvested carrot.
Impressive flavor for a summer-harvested carrot.
70 Days
Standard heat tolerant green leaf with disease resistance.
Standard heat tolerant green leaf.
52 Days
Darkest red leaves with long harvest window and good flavor.
Dark red leaves for mini-head or full-size production. Conventional seed with NOP-compliant pelleting.
48 Days
Heavy, vigorous white-stem pac choi; cold and heat tolerant.
Heavy, vigorous white-stem pac choi.
50 Days
Heat tolerant dark green butterhead with broad disease resistance.
Heat tolerant dark green butterhead. Conventional seed with NOP-compliant pelleting.
48 Days
Darkest red leaves with long harvest window and good flavor.
Darkest red leaves and a long harvest window.
48 Days
A red Summer Crisp with good flavor.
A red Summer Crisp with good flavor.
48 Days
1 - 18 of 69