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
2353 Items
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French Lentils (Organic) - Bulk Grains & FoodsFrench Lentils (Organic) - Bulk Grains & Foods
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Tomato Seeds - Cherry - Gum Drop Brown Hybridmid size pouch type seed packaging for - Tomato Cherry Gum Drop Brown Hybrid
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Endive Seeds - Tres Finesmall size packet type seed packaging for - Endive Tres Fine
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Bean Seeds - Bush - Greencropsmall size packet type seed packaging for - Bean Bush Greencrop
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Tomato Seeds - Slicing - Beefsteak PinkTomato Seeds - Slicing - Beefsteak Pink
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Tomato Seeds - Cherry - Patio Choice Red Hybridmid size pouch type seed packaging for - Tomato Cherry Patio Choice Red Hybrid
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Pea Seeds - Snow - Oregon Giant (Organic)small size packet type seed packaging for - Pea Snow Oregon Giant Organic
-35%
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Tomato Seeds - Slicing - Dakota Sport (Organic)mid size pouch type seed packaging for - Tomato Slicing Dakota Sport Organic
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Melon Seeds - Cantaloupe - Hearts of Gold (Organic)small size packet type seed packaging for - Melon Cantaloupe Hearts of Gold Organic
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Pumpkin Seeds - Mammoth Goldmid size pouch type seed packaging for - Pumpkin Mammoth Gold
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Mustard Seeds - Red TatsoiMustard Seeds - Red Tatsoi
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Radish Seeds - Red Daikon (Ostergruss Rosa)Radish Seeds - Red Daikon (Ostergruss Rosa)
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Pepper Seeds - Sweet - Miniature Chocolate Bellmid size pouch type seed packaging for - Pepper Sweet Miniature Chocolate Bell
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Eggplant Seeds - Kurume Long
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Eggplant Seeds - Italian Rosa Biancasmall size packet type seed packaging for - Eggplant Italian Rosa Bianca
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Gourd Seeds - Calabash Longmid size pouch type seed packaging for - Gourd Calabash Long
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Pepper Seeds - Sweet - Cal Rose Red
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Melon Seeds - Honeydew - Tam Dewsmall size packet type seed packaging for - Melon Honeydew Tam Dew
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Melon Seeds - Aspire Hybridmid size pouch type seed packaging for - Melon Aspire Hybrid
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Tomato Seeds - Culinary Blendsmall size packet type seed packaging for - Tomato Culinary Blend
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Okra Seeds - Silver Queensmall size packet type seed packaging for - Okra Silver Queen
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Pepper Seeds - Hot - Cienfuegos Orange Hybridmid size pouch type seed packaging for - Pepper Hot Cienfuegos Orange Hybrid
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Starting at $1.99
Squash Seeds - Summer - Genovese Zucchinismall size packet type seed packaging for - Squash Summer Genovese Zucchini
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Starting at $2.99
Spinach Seeds - Dash - Hybrid
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Arugula Seeds - Runwaysmall size packet type seed packaging for - Arugula Runway
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Lettuce Seeds - Leaf - Oakleaf - Redsmall size packet type seed packaging for - Lettuce Leaf Oakleaf Red
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Broccoli Raab - Early Fall Rapinimid size pouch type seed packaging for - Broccoli Raab Early Fall Rapini
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Pepper Seeds - Sweet - Tawny Port Hybridmid size pouch type seed packaging for - Pepper Sweet Tawny Port Hybrid
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Bean Seeds - Bush - Tankuro Edamame Soybean
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