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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504 Items
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Tomato Seeds - Slicing - Beefsteak Yellowsmall size packet type seed packaging for - Tomato Slicing Beefsteak Yellow
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Melon Seeds - Honeydew - Earli-Dew HybridMelon Seeds - Honeydew - Earli-Dew Hybrid
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Tomato Seeds - Cherry - Chadwick Cherrymid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Lentil Seeds - Black (Organic)Lentil Seeds - Black (Organic)
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Corn Seeds - Golden Bantam 8mid size pouch type seed packaging for - Corn Golden Bantam 8
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Primula Seeds - Supernova Mixmid size pouch type seed packaging for - Primula Supernova Mix
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Phacelia Seeds - California BluebellPhacelia Seeds - California Bluebell
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Verbena Flower Seeds - Tuscany Peach
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Bean Seeds - Bush - Fava (Organic)Bean Seeds - Bush - Fava (Organic)
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Coleus Seeds - Kong Series (Pelleted)Coleus Seeds - Kong Series (Pelleted)
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Tomato Seeds - Slicing - Chef's Choice Red Hybrid AASmid size pouch type seed packaging for - Tomato Slicing Chefs Choice Red Hybrid AAS
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Sunflower Seeds - Skyscraper (Organic)small size packet type seed packaging for - Sunflower Skyscraper Organic
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Melon Seeds - Bananasmall size packet type seed packaging for - Melon Banana
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Vietnamese Culantro Seeds - Ngo Gaimid size pouch type seed packaging for - Vietnamese Culantro Ngo Gai
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Celosia Seeds - Plumed - Kimono Mixturemid size pouch type seed packaging for - Celosia Plumed Kimono Mixture
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Tomato Seeds - Cherry - Brad's Atomic Grape
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Pumpkin Seeds - Fall Rainbow Blend - Organic
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Calendula Seeds - Orange Pacific Beauty (Organic)
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