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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4042 Items
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Swiss Chard - Rainbow Mixture - Microgreens SeedsSwiss Chard - Rainbow Mixture - Microgreens Seeds
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Dill Seeds - Bouquetmid size pouch type seed packaging for - Dill Bouquet
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Squash Seeds - Winter - Vegetable Spaghetti (Organic)small size packet type seed packaging for - Squash Winter Vegetable Spaghetti Organic
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Lettuce Seeds - Leaf - Black Seeded Simpsonmid size pouch type seed packaging for - Lettuce Leaf Blacked Simpson
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Swiss Chard Seeds - Rainbow MixtureSwiss Chard Seeds - Rainbow Mixture
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Carrot Seeds - Danvers 126 (Organic)small size packet type seed packaging for - Carrot Danvers 126 Organic
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Wildflower Seeds - Hummingbird & Butterfly Pollinator MixWildflower Seeds - Hummingbird & Butterfly Pollinator Mix
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Basil Seeds - Genovese (Organic)mid size pouch type seed packaging for - Basil Genovese Organic
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Geranium Seeds - Pinto Premium SeriesGeranium Seeds - Pinto Premium Series
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Peppermint Seeds (Organic)
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Wildflower Seeds - Save the MonarchsWildflower Seeds - Save the Monarchs
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Garbanzo Bean - Organic - Sprouting SeedsGarbanzo Bean - Organic - Sprouting Seeds
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Pak Choi Seeds - White StemPak Choi Seeds - White Stem
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Bean Seeds - Bush - Jademid size pouch type seed packaging for - Bean Bush Jade
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Pea Seeds - Snap - Sugar Daddy (Organic)small size packet type seed packaging for - Pea Snap Sugar Daddy Organic
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Pumpkin Seeds - Jack O LanternPumpkin Seeds - Jack O Lantern
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French Marigold Seeds - Sparky MixtureFrench Marigold Seeds - Sparky Mixture
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Squash Seeds - Summer - Zucchini Cashflow HybridSquash Seeds - Summer - Zucchini Cashflow Hybrid
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Starting at $4.29
"mid size pouch type seed packaging for - Pea Snow Oregon Sugar Pod II
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Cover Crop Inoculant - Pea, Vetch, Bean, and Lentils (Organic)custom packaging for Mountain Valley Seed Company Exceed Cover Crop Inoculant for Pea, Vetch, and Lentil Crops
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Carrot Seeds - Rainbow Blend (Organic)
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Starting at $3.59
Viola Seeds - Sorbet SeriesViola Seeds - Sorbet Series
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custom box packaging for largest size options of Jiffy Peat PelletsJiffy-7 Peat Seed Starting Pellets (Organic)
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Sprouting Seed Assortment: Sprouting Seed Super SamplerSprouting Seed Assortment: Sprouting Seed Super Sampler
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Handy Pantry - Jute Fiber Hydroponic Grow Medium - 10x20 MatsHandy Pantry - Jute Fiber Hydroponic Grow Medium - 10x20 Mats
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Mustard Seeds - Southern Giant Curledmid size pouch type seed packaging for - Mustard Southern Giant Curled
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Swiss Chard Seeds - Rainbow Mixture (Organic)small size packet type seed packaging for - Swiss Chard Rainbow Mixture Organic
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Hard Red Winter Wheat - Organic - Cover Crop SeedsHard Red Winter Wheat - Organic - Cover Crop Seeds
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Tomato Seeds - Slicing - Cherokee Purple (Organic)
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Lettuce Seeds - Butterhead - All Year Round
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Tobacco Seeds - Virginia 116
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