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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
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
4042 Items
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Tomato Seeds - Slicing - Lemon Boy Hybridmid size pouch type seed packaging for - Tomato Slicing Lemon Boy Hybrid
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Hard Red Spring Wheat - Organic - Cover Crop Seeds
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Cauliflower Seeds - Snowball Y Improved - Organicsmall size packet type seed packaging for - Cauliflower Snowball Y Improved Organic
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Basil - Thai - Microgreens SeedsBasil - Thai - Microgreens Seeds
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Cucumber Seeds - Long Green Imp. Slicingsmall size packet type seed packaging for - Cucumber Long Green Imp Slicing
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Smart Seal 5 Gallon Bucket Lids - SinglesSmart Seal 5 Gallon Bucket Lids - Singles
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Colorful Radish Microgreens MixColorful Radish Microgreens Mix
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Pepper - Hot - Cayenne Thickmid size pouch type seed packaging for - Pepper Hot Cayenne Thick
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Arugula Seeds - Rocket (Roquette)
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Pea Seeds - Shelling - Green Arrowmid size pouch type seed packaging for - Pea Shelling Green Arrow
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Swiss Chard Seeds - Ruby Red - Organicsmall size packet type seed packaging for - Swiss Chard Ruby Red Organic
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German Red Garlic German Red Garlic
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Stainless Steel Wide Mouth Jar Lidscustom box packaging for Stainless Steel Fermenting Kits
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Melon Seeds - Crenshaw - CrenshawMelon Seeds - Crenshaw - Crenshaw
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revitalize your soil with earths most efficient decomposers1 gallon worm casting bag
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Premium Bamboo Microgreens Grow MatsPremium Bamboo Microgreens Grow Mats
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Pea Seeds - Snow - Oregon Giantmid size pouch type seed packaging for - Pea Snow Oregon Giant
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Lettuce Seeds - Romaine - Cimmaronmid size pouch type seed packaging for - Lettuce Romaine Cimmaron
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Lentil - Red (Organic) - Sprouting SeedsLentil - Red (Organic) - Sprouting Seeds
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Heirloom Hot and Sweet Pepper Collection - 8 PackHeirloom Hot and Sweet Pepper Collection - 8 Pack
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Tomato Seeds - Slicing - German Johnsonmid size pouch type seed packaging for - Tomato Slicing German Johnson
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Squash Seeds - Summer - Zucchini GreySquash Seeds - Summer - Zucchini Grey
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