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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New
Limon Talinum
Easy-to-grow plants add unique sparkle to bouquets.
Easy-to-grow plants add unique sparkle to bouquets.
90 - 100 Days
New
Winter Density Romaine Lettuce (Cos)
Old variety with modern adaptations.
Old variety with modern adaptations.
44 Days
New
Monty Standard Broccoli
Superior heat tolerance.
Out of Stock
Superior heat tolerance.
56 Days
Extra early and refined.
Extra early and refined.
21 Days
Johnny's Exclusive
Nabechan Bunching Onions
Better flavor than other bunching onions, sweeter and more complex.
Better flavor than other bunching onions, sweeter and more complex.
60 Days
Heat-tolerant organic variety that produces high-quality roots.
Heat-tolerant organic variety that produces high-quality roots.
22 Days
Early, heat-tolerant standard variety.
Early, heat-tolerant standard variety.
21 baby; 38 full size
Heat tolerant, full-size romaine.
Heat tolerant, full-size romaine.
57 Days
Our most heat tolerant lettuce.
Our most heat tolerant lettuce.
50 Days
Impressive flavor for a summer-harvested carrot.
Impressive flavor for a summer-harvested carrot.
70 Days
Excellent heat tolerance.
Excellent heat tolerance.
66 Days
Heavy, vigorous white-stem pac choi; cold and heat tolerant.
Heavy, vigorous white-stem pac choi; cold and heat tolerant.
50 Days
Heat tolerant dark green butterhead with broad disease resistance.
Heat tolerant dark green butterhead with broad disease resistance.
48 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
The most heat tolerant lettuce.
The most heat tolerant lettuce.
50 Days
Heat tolerant, full-size romaine.
Heat tolerant, full-size romaine.
57 Days
Excellent heat tolerance and smooth, well-domed, very attractive heads.
Excellent heat tolerance and smooth, well-domed, very attractive heads.
57 Days
1 - 18 of 71