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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19 - 36 of 71
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Uniform, disease-resistant green leaf with excellent heat tolerance.
Uniform, disease-resistant green leaf with excellent heat tolerance.
52 Days
Very slow bolting, broadleaf mustard.
Very slow bolting, broadleaf mustard.
21 baby; 45 full size
Our most heat tolerant lettuce.
Our most heat tolerant lettuce.
50 Days
Johnny's Exclusive
Black Summer Pac Choi (Bok Choy)
Beautiful dark green pac choi, best at full size, suitable for minis.
Beautiful dark green pac choi, best at full size, suitable for minis.
45 Days
Most adaptable butterhead with excellent flavor and texture.
Most adaptable butterhead with excellent flavor and texture.
47 Days
Dark green, compact romaine for an all-season mid-size.
Dark green, compact romaine for an all-season mid-size.
46 Days
Impressive flavor for a summer-harvested carrot.
Impressive flavor for a summer-harvested carrot.
70 Days
Johnny's Exclusive
Adriana Butterhead Lettuce (Boston)
Heat tolerant dark green butterhead with broad disease resistance.
Heat tolerant dark green butterhead with broad disease resistance.
48 Days
Johnny's Exclusive
Panisse Oakleaf Lettuce
Large, bright green oakleaf with dense heads and long harvest window.
Large, bright green oakleaf with dense heads and long harvest window.
48 Days
Impressive flavor for a summer-harvested carrot.
Impressive flavor for a summer-harvested carrot.
70 Days
Our most attractive green leaf lettuce.
Our most attractive green leaf lettuce.
53 Days
A red Summer Crisp with good flavor.
A red Summer Crisp with good flavor.
48 Days
Fast-growing blonde romaine for baby leaf and full-size heads.
Fast-growing blonde romaine for baby leaf and full-size heads.
29 baby
High-quality beefsteak that sets fruit in heat.
High-quality beefsteak that sets fruit in heat.
78 Days
Bulky and uniform white-stemmed pac choi for mini or full-size heads.
Bulky and uniform white-stemmed pac choi for mini or full-size heads.
52 Days
Standard heat-tolerant green leaf with disease resistance.
Standard heat-tolerant green leaf with disease resistance.
52 Days
Uniform, disease-resistant green leaf with excellent heat tolerance.
Uniform, disease-resistant green leaf with excellent heat tolerance.
52 Days
Johnny's Exclusive
Panisse Oakleaf Lettuce
Large, bright green oakleaf with dense heads and long harvest window.
Large, bright green oakleaf with dense heads and long harvest window.
48 Days
19 - 36 of 71