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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2424 Items
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Cucumber Seeds - Beit Alpha F1 CMR/MMRCucumber Seeds - Beit Alpha F1 CMR/MMR
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Pak Choi Seeds - Dwarf White Stemmid size pouch type seed packaging for - Pak Choi Dwarf White Stem
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Cabbage Seeds - Early Jersey Wakefieldsmall size packet type seed packaging for - Cabbage Early Jersey Wakefield
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Basil Seeds - Dwarf Greeksmall size packet type seed packaging for - Basil Dwarf Greek
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Eggplant Seeds - Thai Roundmid size pouch type seed packaging for - Eggplant Thai Round
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Bean Seeds - Bush - Tenderette Greenmid size pouch type seed packaging for - Bean Bush Tenderette Green
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African Marigold Seeds - Discovery SeriesAfrican Marigold Seeds - Discovery Series
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Broccoli Seeds - Chinese Broccoli - Late Jade - Hybridmid size pouch type seed packaging for - Broccoli Chinese Broccoli Late Jade Hybrid
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Japanese Mugwort - Yomogi
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Beet Seeds - Red Ace Hybridsmall size packet type seed packaging for - Beet Red Ace Hybrid
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Lettuce Seeds - Tom Thumb - Organicsmall size packet type seed packaging for - Lettuce Tom Thumb Organic
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Echinacea Seeds - PowWow Wild Berrymid size pouch type seed packaging for - Echinacea PowWow Wild Berry
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Carrot Seeds - Solar Yellow - Organicsmall size packet type seed packaging for - Carrot Solar Yellow Organic
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Watermelon Seeds - Picnic - Dixie Queenmid size pouch type seed packaging for - Watermelon Picnic Dixie Queen
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Zinnia Seeds - Dreamland Mixture (Coated)mid size pouch type seed packaging for - Zinnia Dreamland Mixture Coated
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Columbine Seeds - Colorado Bluemid size pouch type seed packaging for - Columbine Colorado Blue
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Bean Seeds - Bush - Topcropsmall size packet type seed packaging for - Bean Bush Topcrop
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Rosemary Seeds (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Onion - Long - Southport White Globe 404small size packet type seed packaging for - Onion Long Southport White Globe 404
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Lobelia Seeds - Regatta Series (MSP)Lobelia Seeds - Regatta Series (MSP)
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Cauliflower Seeds - Veronica Romanesco Hybridmid size pouch type seed packaging for - Cauliflower Veronica Romanesco Hybrid
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Eggplant Seeds - Japanese PicklingEggplant Seeds - Japanese Pickling
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Starting at $3.69
Cucumber Seeds - Bush Cropmid size pouch type seed packaging for - Cucumber Bush Crop
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Starting at $3.29
Lupine Seeds - Texas Blue BonnetLupine Seeds - Texas Blue Bonnet
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Starting at $2.99
Corn Seeds - Sweet - Ambrosia Hybrid (treated)mid size pouch type seed packaging for - Corn Sweet Ambrosia Hybrid treated
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Calendula Seeds - Fancy MixCalendula Seeds - Fancy Mix
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Bean Seeds - Bush -  Fordhook 242 Lima
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Gourds Seeds - Turks Turbanmid size pouch type seed packaging for - Gourds Turks Turban
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Onion Seeds - Bunching - Ishikura Winter Longmid size pouch type seed packaging for - Onion Bunching Ishikura Winter Long
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Tomato Seeds - Slicing - Chef's Choice Black Hybrid AASmid size pouch type seed packaging for - Tomato Slicing Chefs Choice Black Hybrid AAS
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