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.
Done
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
Standard heat tolerant green leaf with disease resistance.
Standard heat tolerant green leaf. Conventional seed with conventional pelleting.
52 Days
Johnny's Exclusive
Very dark green komatsuna with good heat and cold tolerance.
Very dark green komatsuna.
21 baby; 35 full size
Fast growing blonde romaine for baby leaf and full-size heads.
Blonde romaine for baby leaf and full-size heads.
29 baby
Heat tolerant, full-size romaine.
Heat tolerant, full-size romaine. Organic seed with NOP-compliant pelleting.
57 Days
Most adaptable butterhead with excellent flavor and texture.
Most adaptable butterhead. Conventional seed with NOP-compliant pelleting.
47 Days
Heat tolerant dark green butterhead with broad disease resistance.
Heat tolerant dark green butterhead. Conventional seed with NOP-compliant pelleting.
48 Days
Johnny's Exclusive
Large, bright green oak leaf with dense heads and long harvest window.
Bright green oak leaf. Conventional seed with NOP-compliant pelleting.
48 Days
Bulky and uniform white-stemmed pac choi for mini or full-size heads.
For mini or full-size heads.
52 Days
Heat tolerant, full-size romaine.
A longtime favorite. Conventional seed with conventional pelleting.
57 Days
Impressive flavor for a summer-harvested carrot.
Impressive flavor for a summer-harvested carrot.
70 Days
Heat-tolerant romaine for long, uniform hearts with good flavor.
Heat-tolerant romaine for hearts.
58 Days
A red Summer Crisp with good flavor.
A red Summer Crisp with good flavor.
48 Days
A red Summer Crisp with good flavor.
A red Summer Crisp with good flavor. Conventional seed with NOP-compliant pelleting.
48 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
Darkest red leaves with long harvest window and good flavor.
Darkest red leaves and a long harvest window.
48 Days
Bright green leaves form dense, closed heads.
Bright green leaves form dense, closed heads. Conventional seed with NOP-compliant pelleting.
48 Days