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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Pepper Seeds - Sweet - Tennessee Cheesemid size pouch type seed packaging for - Pepper Sweet Tennessee Cheese
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Basil Seeds - Red Rubin (Organic)
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Lettuce Seeds - Leaf - Flame (Organic)small size packet type seed packaging for - Lettuce Leaf Flame Organic
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Pepper Seeds - Hot - Japanese - Takanotsumemid size pouch type seed packaging for - Pepper Hot Japanese Takanotsume
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Celosia Seeds - Wheat - Flamingo SeriesCelosia Seeds - Wheat - Flamingo Series
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Cabbage Seeds - Purple Savoysmall size packet type seed packaging for - Cabbage Purple Savoy
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Nasturtium - Whirlybird Mix - Microgreens SeedsNasturtium - Whirlybird Mix - Microgreens Seeds
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Mustard Seeds - Mizuna Red Streaks (Organic)Mustard Seeds - Mizuna Red Streaks (Organic)
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Beet Seeds - Ruby Queen (Organic)mid size pouch type seed packaging for - Beet Ruby Queen Organic
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Nicotiana Seeds - Starmaker Series (Pelleted)Nicotiana Seeds - Starmaker Series (Pelleted)
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Beet Seeds - Lutz Green Leafsmall size packet type seed packaging for - Beet Lutz Green Leaf
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Red Lentils (Organic) - Bulk Grains & FoodsRed Lentils (Organic) - Bulk Grains & Foods
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Radish Seeds - German Giant - Organicsmall size packet type seed packaging for - Radish German Giant Organic
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Coleus Seeds - Kong Series (Pelleted)Coleus Seeds - Kong Series (Pelleted)
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$20.63
Zinnia Seeds - California Giants - Organicsmall size packet type seed packaging for - Zinnia California Giants Organic
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Pepper Seeds, Hot - Big Jim (Organic)mid size pouch type seed packaging for - Pepper Hot Big Jim Organic
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Pepper Seeds - Hot - Thai Scorpion HybridPepper Seeds - Hot - Thai Scorpion Hybrid
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Pepper Seeds - Hot - Hot Portugalmid size pouch type seed packaging for - Pepper Hot Hot Portugal
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Pepper Seeds - Hot - Alma Paprikasmall size packet type seed packaging for - Pepper Hot Alma Paprika
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Lettuce Seeds - Leaf - Flamemid size pouch type seed packaging for - Lettuce Leaf Flame
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Beet Seeds - Green Top Bunching - Organicsmall size packet type seed packaging for - Beet Green Top Bunching Organic
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Mustard - Red Giant - Microgreens SeedsMustard - Red Giant - Microgreens Seeds
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Salvia Seeds - Red Hot Sally IImid size pouch type seed packaging for - Salvia Red Hot Sally II
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Lettuce Seeds - Merveille Des Quatre Saisonssmall size packet type seed packaging for - Lettuce Merveille Des Quatre Saisons
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Tomato Seeds - Cherry - Brad's Atomic Grape
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Pepper Seeds - Sweet - Corno Di Toro Rossosmall size packet type seed packaging for - Pepper Sweet Corno Di Toro Rosso
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Petunia Seeds - Double Cascade Valentine Mix (pelleted)mid size pouch type seed packaging for - Petunia Double Cascade Valentine Mix pelleted
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Starting at $3.39
Nasturtium Seeds - Jewel Mix (Organic)Nasturtium Seeds - Jewel Mix (Organic)
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Agastache Seeds - Arizona Sunmid size pouch type seed packaging for - Agastache Arizona Sun
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Quinoa Seeds - Red Head Quinoa - Organic
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Hollyhock Seeds - Powderpuffs Double Mix
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Hollyhock Seeds - Chaters Double Mixture
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