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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628 Items
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Pak Choi Seeds - Da Hong Summer Hybridmid size pouch type seed packaging for - Pak Choi Da Hong Summer Hybrid
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Pak Choi Seeds - Da Hong Summer Hybrid
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Sedum Seeds - Dragons Blood
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$15.33
radish fire candleRadish Seeds - Fire Candle
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Squash Seeds - Winter - Hubbard Golden Delicioussmall size packet type seed packaging for - Squash Winter Hubbard Golden Delicious
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Lettuce Seeds, Leaf - Prizehead - Organicsmall size packet type seed packaging for - Lettuce Leaf Prizehead Organic
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Organic
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Mustard Seeds - Red Komatsuna Hybridmid size pouch type seed packaging for - Mustard Red Komatsuna Hybrid
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Radish Seeds - Long Scarlet CincinnatiRadish Seeds - Long Scarlet Cincinnati
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Turnip Seeds - Tsugaru Scarlet - Hybridmid size pouch type seed packaging for - Turnip Tsugaru Scarlet Hybrid
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Smart Seal Lids - Multi-Color 10 PackSmart Seal Lids - Multi-Color 10 Pack
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$104.99
Pepper Seeds - Hot - NuMex Joe E Parkersmall size packet type seed packaging for - Pepper Hot NuMex Joe E Parker
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Pepper Seeds - Hot - NuMex Joe E Parker
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Radish Seeds - Pink Summerciclemid size pouch type seed packaging for - Radish Pink Summercicle
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Iberis Candytuft Dwarf Fairy MixtureIberis Candytuft Dwarf Fairy Mixture
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Begonia Seeds - Angelwing - Dragon Wing Red (Pelleted)mid size pouch type seed packaging for - Begonia Angelwing Dragon Wing Red Pelleted
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Salpiglossis Seeds - Royale SeriesSalpiglossis Seeds - Royale Series
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Gypsophila Seeds - Gypsy Deep Rosemid size pouch type seed packaging for - Gypsophila Gypsy Deep Rose
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Lettuce Seeds - Leaf - Maricellasmall size packet type seed packaging for - Lettuce Leaf Maricella
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Lettuce Seeds - Leaf - Maricella
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Amaranth Seeds - All Red Leaf - Microgreens Seedsmid size pouch type seed packaging for - Amaranth All Red Leaf Microgreens
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Amaranth Seeds - All Red Leaf - Microgreens Seeds
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Pepper Hot Chiltepin
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Pepper Seeds - Hot - Tepin
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Radish - Red Daikon (Ostergruss Rosa) - Microgreens SeedsRadish - Red Daikon (Ostergruss Rosa) - Microgreens Seeds
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Lettuce Leaf - Ruby Red - Microgreens SeedsLettuce Leaf - Ruby Red - Microgreens Seeds
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Carnation Seeds - CanCan Scarlet (Treated)mid size pouch type seed packaging for - Carnation CanCan Scarlet Treated
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Carnation Seeds - CanCan Scarlet (Treated)
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Turnip Seeds - Hidabenimid size pouch type seed packaging for - Turnip Hidabeni
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Pepper Seeds - Hot - Cherry Mini Hot Hybridmid size pouch type seed packaging for - Pepper Hot Cherry Mini Hot Hybrid
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Pepper Seeds - Sweet - Cubanella Hybridmid size pouch type seed packaging for - Pepper Sweet Cubanella Hybrid
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Peppers from Hell Seed StarterPeppers From Hell Seed Starter 6-Pack
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$5.60
Pepper Seeds - Hot - Padronmid size pouch type seed packaging for - Pepper Hot Padron
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Pepper Seeds - Hot - Mariachi HybridPepper Seeds - Hot - Mariachi Hybrid
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Geranium Seeds - Tornado Series Mix
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Amaranth Seeds - Red Army
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Lettuce Seeds - Butterhead & Bibb Mix (Organic)
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Zinnia Seeds - Red Beauty - Organic
Starting at $3.99
Strawberry Roots - Everbearing - Eversweet Hybrid
$24.95
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