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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Modular Raised Garden BedModular Raised Garden Bed
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Fruit Cage - Anti-Bird NettingFruit Cage - Anti-Bird Netting
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custom box packaging for Pansy Flowers Around The BoxSeed Starter Kit - Pansy
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Winter Garden TentWinter Garden Tent
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contact customer service at 801-491-8700 for instructions helpIntegrated Strip T5 4FT LED Mushroom Grow Light - 2 Pack – Blue Sun Spectrum
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custom packaging for Bloom Master Hanging Basket Kit - PansyBloom Master Hanging Basket Kit - Pansy
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Small Hanging Hopper FeederSmall Hanging Hopper Feeder
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contact customer service at 801-491-8700 for instructions help4FT T5 HO 4 Lamp 2.0 LED Mushroom Grow Light – Blue Sun Spectrum
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4FT T5 HO 4 Lamp 2.0 LED Mushroom Grow Light...
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Walk-In GreenhouseWalk-In Greenhouse
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Planter Box Hanging StrapsPlanter Box Hanging Straps
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contact customer service at 801-491-8700 for instructions helpT5 HO Ballast Bypass 4FT LED Mushroom Grow Lamp - 4 Pack – Blue Sun Spectrum
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4FT T5 HO 8 Lamp LED Grow Light - Sun...
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