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
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696 Items
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Tomatillo Seeds - Ground Cherrymid size pouch type seed packaging for - Tomatillo Ground Cherry
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Heirloom
Tomatillo Seeds - Ground Cherry
Starting at $2.99
Rapeseed - Canola - Microgreens SeedsRapeseed - Canola - Microgreens Seeds
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Rapeseed - Canola - Microgreens Seeds
Starting at $5.28
Carrot Seeds - Thumbelina
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Carrot Seeds - Thumbelina
Starting at $2.99
Allium Bulbs - Purple Sensation
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Allium Bulbs - Purple Sensation
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Tulip Bulbs - Double Early - Mixed
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Tulip Bulbs - Double Early - Mixed
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Endive Seeds - Catalogna Emeraldsmall size packet type seed packaging for - Endive Catalogna Emerald
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Endive Seeds - Catalogna Emerald
Starting at $2.99
Pea Seeds - ParsleyPea Seeds - Parsley
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Pea Seeds - Parsley
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Tomato Seeds - Cherry - Purple Bumble Beemid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Tomato Seeds - Cherry - Purple Bumble Bee
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Pepper Seeds - Hot - Habanero Blend
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Pepper Seeds - Hot - Habanero Blend
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Gourd Seeds - Chinese OkraGourd Seeds - Chinese Okra
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Seed Assortment - The Beginner's Summer GardenSeed Assortment - The Beginner's Summer Garden
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$18.40
Tulip Bulbs - Double Late - Mixed
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Tulip Bulbs - Double Late - Mixed
Starting at $18.99
Peony Bulbs - Coral Sunset
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Radish - Long Scarlet Cincinnati - Microgreens SeedsRadish - Long Scarlet Cincinnati - Microgreens Seeds
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Radish - Long Scarlet Cincinnati - Microgreens Seeds
Starting at $5.98
Cotton Seeds - Mississippi BrownCotton Seeds - Mississippi Brown
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Cotton Seeds - Mississippi Brown
Starting at $3.39
Tomato Seeds - Slicing - Tasmanian Chocolatemid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Tomato Seeds - Slicing - Tasmanian Chocolate
Starting at $3.69
Gourd Seeds - Small Warted Mix
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Gourd Seeds - Small Warted Mix
Starting at $2.99
1020 2.5 Inch Deep Mesh Trays - Extra Strength
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1020 2.5 Inch Deep Mesh Trays - Extra Strength
Starting at $27.25
Gourd Seeds - Pear (Bi-Color)
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Gourd Seeds - Pear (Bi-Color)
Starting at $2.99
Leek Seeds - Giant Musselburgh - MicrogreensLeek Seeds - Giant Musselburgh - Microgreens
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Leek Seeds - Giant Musselburgh - Microgreens
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Eggplant Seeds - Turkish Orangemid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Bellis (English Daisy) Seeds - Pomponette MixBellis (English Daisy) Seeds - Pomponette Mix
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Starting at $3.39
Seed Assortment - 9 Variety Herb & Vegetable Collection for BeginnersSeed Assortment - 9 Variety Herb & Vegetable Collection for Beginners
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$17.24
Sweetest Corn Seeds CollectionSweetest Corn Seeds Collection
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$18.66
custom packaging for Seed Starter KitsSeed Starter Kits
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Pint - 1 quart - 2 quart - 3 quart - White or Craft Brown Sustainable Produce and Microgreens Market Boxes white backgroundSquare Pint - 2 Quart - 3 Quart Craft Sustainable Boxes
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Pepper Seeds - Hot - Thai OrnamentalPepper Seeds - Hot - Thai Ornamental
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Starting at $2.99
Pearled Emmer Wheat Farro (Organic) - Bulk GrainsPearled Emmer Wheat Farro (Organic) - Bulk Grains
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Pearled Emmer Wheat Farro (Organic) - Bulk Grains
Starting at $7.55
Peony Bulbs - Shirley Temple
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Starting at $16.99
Lettuce Seeds - Leaf - Merlot (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Organic
Lettuce Seeds - Leaf - Merlot (Organic)
Starting at $3.59
Zinnia Seeds - Queeny Lime Blush
Starting at $6.39
Gourd Seeds - Extra Long Snake
Starting at $3.99
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