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May is the month when the gardening season shifts into high gear across most of the country. In cold-winter zones, the last frost is finally behind us, and it's time to get warm-season crops in the ground. In mild-winter zones, the garden is already humming, and the focus turns to keeping up with rapid spring growth. And in the warmest zones, the race is on to get heat-lovers established before summer temperatures take over. Whatever your zone, May is a month of momentum.


Zones 1-7a: May is the main planting kickoff in cold-winter zones, when gardens finally move from starts and prep into full outdoor action. Early May often still favors hardy transplants and direct-sown cool-season crops, while mid-to-late May is when many areas can safely set out warm-season plants as frost risk drops. Keep hardening off seedlings, use row cover if nights run cold, and focus on steady watering and early weed control so young plants establish quickly.

Zones 7b-9a: May is prime warm-season planting time in mild-winter zones, with soil temperatures rising and growth accelerating. This is the month to get main-season crops established outdoors, keep up with succession sowing, and set up supports before vines and tall plants take off. Watch moisture as days warm, mulch to hold soil moisture, and keep an eye out for the first big flush of pests as the garden hits its stride.

Zones 9b-12: May marks the shift into early summer conditions in the warm-winter zones, and gardens respond fast with rapid growth. Warm-season crops should be planted and growing strongly now, and succession sowing keeps harvests coming even as temperatures climb. Stay ahead of heat stress by mulching, watering consistently, and planting in the coolest part of the day - and in the hottest areas, begin planning for shade cloth and other summer protection.

50 100 true //store.trueleafmarket.com/cdn/shop/t/54/assets/review-fallback.json?v=33078429469613971781712858278
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
1653 Items
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Tomato Seeds - Slicing - Brandywine Red Regular Leafmid size pouch type seed packaging for - Tomato Slicing Brandywine Red Regular Leaf
-0
Heirloom
Tomato Seeds - Slicing - Brandywine Red Regular Leaf
Starting at $2.99
Watermelon Seeds - Picnic - All Sweetsmall size packet type seed packaging for - Watermelon Picnic All Sweet
-0
Heirloom
Watermelon Seeds - Picnic - All Sweet
Starting at $3.29
Bean Seeds - Bush - Tendergreensmall size packet type seed packaging for - Bean Bush Tendergreen
-0
Heirloom
Bean Seeds - Bush - Tendergreen
Starting at $2.99
Bean Seeds - Bush - Early Thorogreen Limasmall size packet type seed packaging for - Bean Bush Early Thorogreen Lima
-0
Heirloom
Bean Seeds - Bush - Early Thorogreen Lima
Starting at $2.63
Aster Seeds - Powderpuff Mixmid size pouch type seed packaging for - Aster Powderpuff Mix
-0
Aster Seeds - Powderpuff Mix
Starting at $2.99
Tomato Seeds - Cherry - Fox Cherry (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-0
Heirloom
Organic
Tomato Seeds - Cherry - Fox Cherry (Organic)
Starting at $3.59
Soybean - Black (Organic) - Sprouting SeedsSoybean - Black (Organic) - Sprouting Seeds
-0
Organic
Soybean - Black (Organic) - Sprouting Seeds
Starting at $10.56
Petunia Seeds - Frost Series (Pelleted)Petunia Seeds - Frost Series (Pelleted)
-0
Petunia Seeds - Frost Series (Pelleted)
Starting at $2.99
Cucumber Seeds - Rhinish PickleCucumber Seeds - Rhinish Pickle
-0
Heirloom
Cucumber Seeds - Rhinish Pickle
Starting at $2.99
Melon Seeds - Cantaloupe - Honey Rocksmall size packet type seed packaging for - Melon Cantaloupe Honey Rock
-0
AAS Winner
Heirloom
Melon Seeds - Cantaloupe - Honey Rock
Starting at $2.99
Squash Seeds - Korean, Summer - King Ka Ae - Hybridmid size pouch type seed packaging for - Squash Korean Summer King Ka Ae Hybrid
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Squash Seeds - Korean, Summer - King Ka Ae -...
Starting at $3.99
Squash Seeds - Summer - Scallop Yellow Bush (Organic)mid size pouch type seed packaging for - Squash Summer Scallop Yellow Bush Organic
-0
Organic
Squash Seeds - Summer - Scallop Yellow Bush (Organic)
Starting at $3.59
Bean Seeds - Pole - Yu Long Noodle Kin Yard Longmid size pouch type seed packaging for - Bean Pole Yu Long Noodle Kin Yard Long
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Bean Seeds - Pole - Yu Long Noodle Kin Yard...
Starting at $3.99
Gourd Seeds, Wax - Winter Melon Roundmid size pouch type seed packaging for - Gourd Wax Winter Melon Round
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Heirloom
Gourd Seeds, Wax - Winter Melon Round
Starting at $3.69
Echinacea Seeds - Bravadomid size pouch type seed packaging for - Echinacea Bravado
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Echinacea Seeds - Bravado
Starting at $4.39
Corn Seeds - Popcorn - Yellow (Organic)mid size pouch type seed packaging for - Corn Popcorn Yellow Organic
-0
Heirloom
Organic
Corn Seeds - Popcorn - Yellow (Organic)
Starting at $3.59
Sunflower Seeds - Chocolate Cherrysmall size packet type seed packaging for - Sunflower Chocolate Cherry
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Sunflower Seeds - Chocolate Cherry
Starting at $2.99
Cucumber Seeds - Dragon Suhyo Cross Hybridmid size pouch type seed packaging for - Cucumber Dragon Suhyo Cross Hybrid
-0
Cucumber Seeds - Dragon Suhyo Cross Hybrid
Starting at $3.99
Tomato Seeds - Slicing - Marglobe (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-41%
Heirloom
Organic
Tomato Seeds - Slicing - Marglobe (Organic)
Starting at $1.99
Cucumber Seeds - Asia Eun Cheon - Hybridmid size pouch type seed packaging for - Cucumber Asia Eun Cheon Hybrid
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Cucumber Seeds - Asia Eun Cheon - Hybrid
Starting at $3.99
White Berseem Clover (Coated) - Cover Crop Seedssmall size packet type seed packaging for - White Berseem Clover Coated Cover Crop
-0
Heirloom
White Berseem Clover (Coated) - Cover Crop Seeds
Starting at $3.39
Tomato Seeds - Slicing - Giant Red Beefsteakmid size pouch type seed packaging for - Tomato Slicing Giant Red Beefsteak
-0
Tomato Seeds - Slicing - Giant Red Beefsteak
Starting at $2.99
Squash Seeds - Japanese Red Kuri - OrganicSquash Seeds - Japanese Red Kuri - Organic
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Heirloom
Organic
Squash Seeds - Japanese Red Kuri - Organic
Starting at $3.99
Cucumber Seeds - Southern Delight - Hybridmid size pouch type seed packaging for - Cucumber Southern Delight Hybrid
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Cucumber Seeds - Southern Delight - Hybrid
Starting at $3.99
Tomato Seeds - Slicing - Pineapple (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-0
Heirloom
Organic
Tomato Seeds - Slicing - Pineapple (Organic)
Starting at $3.59
Squash Seeds - Summer - Bennings Green Tint Scallopmid size pouch type seed packaging for - Squash Summer Bennings Green Tint Scallop
-33%
Heirloom
Squash Seeds - Summer - Bennings Green Tint Scallop
Starting at $1.99
Melon Seeds - Cantaloupe - Ambrosia HybridMelon Seeds - Cantaloupe - Ambrosia Hybrid
-0
Melon Seeds - Cantaloupe - Ambrosia Hybrid
Starting at $7.49
Squash Seeds - Japanese, Winter - Sweet Mama - Hybridmid size pouch type seed packaging for - Squash Japanese Winter Sweet Mama Hybrid
-0
AAS Winner
Squash Seeds - Japanese, Winter - Sweet Mama - Hybrid
Starting at $3.99
Tomato Seeds - Slicing - Momotaro Hybridmid size pouch type seed packaging for - Tomato Slicing Momotaro Hybrid
-0
Tomato Seeds - Slicing - Momotaro Hybrid
Starting at $4.99
Cucumber Seeds - Boston Pickling (Organic)
Starting at $3.59
French Marigold Seeds - Naughty Marietta
Starting at $2.99
Orach Seeds - Purple
Starting at $2.99
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