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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2077 Items
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Petunia Seeds - Frost Series (Pelleted)Petunia Seeds - Frost Series (Pelleted)
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Cucumber Seeds - Rhinish PickleCucumber Seeds - Rhinish Pickle
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Melon Seeds - Cantaloupe - Honey Rocksmall size packet type seed packaging for - Melon Cantaloupe Honey Rock
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Squash Seeds - Korean, Summer - King Ka Ae - Hybridmid size pouch type seed packaging for - Squash Korean Summer King Ka Ae Hybrid
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Mustard Seeds - Mizuna Red StreaksMustard Seeds - Mizuna Red Streaks
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Squash Seeds - Summer - Scallop Yellow Bush (Organic)mid size pouch type seed packaging for - Squash Summer Scallop Yellow Bush Organic
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Mustard Seeds -  Japanese Red Giantmid size pouch type seed packaging for - Mustard Japanese Red Giant
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Pepper Seeds - Hot - Super Chili HybridPepper Seeds - Hot - Super Chili Hybrid
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Pepper Seeds - Sweet - Sweet Cayennemid size pouch type seed packaging for - Pepper Sweet Sweet Cayenne
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Lettuce Seeds - Leaf - PrizeheadLettuce Seeds - Leaf - Prizehead
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