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.

Indoors (fresh harvests):

  • Microgreens: peas, broccoli, sunflowers, arugula
  • Sprouts: alfalfa, broccoli, radish, mung
  • Herbs & greens under lights: chives, parsley, mint

Transplants to move outdoors (harden first): pepper, tomato, eggplant, melons, basil, okra — these should go out early May if not already in the ground

Crops that can be directly sown outdoors in May: beans, corn, cucumber, squash, melons, okra, sunflower, basil, dill, sweet potato slips. Succession sow beets, carrots, and radishes early in the month before heat sets in.

Cover crops: buckwheat, cowpeas, sorghum-sudangrass

Note: Warm-season crops should be going directly outdoors now, not starting under lights.

Tip: An Olympia, WA zone 8 is very different from a Jackson, MS zone 8. Consider checking with your state Extension Service office for more specific recommendations and guidelines.

Use your USDA zone as a guide. Microclimates matter — coastal/urban spots run warmer; high elevation runs colder.

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
323 Items
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Watermelon Seeds - Picnic - Legacymid size pouch type seed packaging for - Watermelon Picnic Legacy
-0
Heirloom
Watermelon Seeds - Picnic - Legacy
Starting at $3.59
Gourd Seeds - Haa Sing - Hybridmid size pouch type seed packaging for - Gourd Haa Sing Hybrid
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Gourd Seeds - Haa Sing - Hybrid
Starting at $3.99
Watermelon Seeds - Picnic - Sweet Princess (Organic)mid size pouch type seed packaging for - Watermelon Picnic Sweet Princess Organic
-0
Heirloom
Organic
Watermelon Seeds - Picnic - Sweet Princess (Organic)
Starting at $4.19
Gourd Seeds - Harvest Wings F1mid size pouch type seed packaging for - Gourd Harvest Wings F1
-0
Gourd Seeds - Harvest Wings F1
Starting at $3.99
Pumpkin Seeds - Galeux d'Eysines (Treated)small size packet type seed packaging for - Pumpkin Galeux dEysines Treated
-0
Heirloom
Pumpkin Seeds - Galeux d'Eysines (Treated)
Starting at $25.97
Pumpkin Seeds - Baby Boo (treated)Pumpkin Seeds - Baby Boo (treated)
-0
Heirloom
Pumpkin Seeds - Baby Boo (treated)
Starting at $44.29
Watermelon Seeds - Tom Watson
-0
Heirloom
Watermelon Seeds - Tom Watson
Starting at $2.99
Pumpkin Seeds - Early Harvest F1small size packet type seed packaging for - Pumpkin Early Harvest F1
-0
Pumpkin Seeds - Early Harvest F1
Starting at $4.29
Melon Seeds - Branco Do Ribatejosmall size packet type seed packaging for - Melon Branco Do Ribatejo
-0
Heirloom
Melon Seeds - Branco Do Ribatejo
Starting at $2.99
Watermelon Seeds - Picnic - Triple Sweet Hybridsmall size packet type seed packaging for - Watermelon Picnic Triple Sweet Hybrid
-0
Watermelon Seeds - Picnic - Triple Sweet Hybrid
Starting at $8.49
Gourd Seeds - Buag Ngumid size pouch type seed packaging for - Gourd Buag Ngu
-0
Heirloom
Gourd Seeds - Buag Ngu
Starting at $3.99
Pumpkin Seeds - Autumn Gold Hybridmid size pouch type seed packaging for - Pumpkin Autumn Gold Hybrid
-0
AAS Winner
Pumpkin Seeds - Autumn Gold Hybrid
Starting at $4.49
Pumpkin Seeds - Connecticut Field - Organicsmall size packet type seed packaging for - Pumpkin Connecticut Field Organic
-0
Heirloom
Organic
Pumpkin Seeds - Connecticut Field - Organic
Starting at $3.59
Melon Seeds - Cantaloupe - Haogen (Organic)small size packet type seed packaging for - Melon Cantaloupe Haogen Organic
-0
Heirloom
Organic
Melon Seeds - Cantaloupe - Haogen (Organic)
Starting at $3.59
Watermelon Seeds - Picnic - Greybellesmall size packet type seed packaging for - Watermelon Picnic Greybelle
-0
Heirloom
Watermelon Seeds - Picnic - Greybelle
Starting at $2.99
Melon Seeds - Crenshaw - Crenshaw (Organic)small size packet type seed packaging for - Melon Crenshaw Crenshaw Organic
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Heirloom
Organic
Melon Seeds - Crenshaw - Crenshaw (Organic)
Starting at $3.59
Melon Seeds - Cantaloupe - Iroquois (Organic)small size packet type seed packaging for - Melon Cantaloupe Iroquois Organic
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Heirloom
Organic
Melon Seeds - Cantaloupe - Iroquois (Organic)
Starting at $3.59
Gourd Seeds - Chinese OkraGourd Seeds - Chinese Okra
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Heirloom
Gourd Seeds - Chinese Okra
Starting at $3.99
Melon Seeds - Late ValenciaMelon Seeds - Late Valencia
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Heirloom
Melon Seeds - Late Valencia
Starting at $2.99
Melon Seeds - Japanese - New Melon
Starting at $3.99
Watermelon Seeds - Mini - Baby Doll Hybrid (Organic)
Starting at $6.79
Gourd Seeds - Bushel
Starting at $2.99
Strawberry Roots - June Bearing - Allstar Hybrid
$12.48 $24.95
Pumpkin Seeds - Cherokee Bush
Starting at $3.79
Watermelon Seeds - Mini - Triple Treat Hybrid
Starting at $8.49
Watermelon Seeds - Mini - Treasure Chest Hybrid
Starting at $9.19
Melon Seeds - Casaba - Sungold
Starting at $2.99
Melon Seeds - Cantaoupe - Rocky Ford Green Flesh (Organic)
Starting at $3.59
Strawberry Roots - June Bearing - Chandler Hybrid
$12.48 $24.95
Gourd Seeds - Turks Turban Mini
Starting at $2.99
Melon Seeds - Sakata's Sweet
Starting at $3.99
Pumpkin Seeds - Cinderella's Carriage F1 AAS
Starting at $4.09
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