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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Turnip Seeds - Kanamachimid size pouch type seed packaging for - Turnip Kanamachi
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Turnip Seeds - Kanamachi
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Tomato Seeds - Slicing - Dr. Wyche's Yellowsmall size packet type seed packaging for - Tomato Slicing Dr Wyches Yellow
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Tomato Seeds - Cherry - Chelsea OPmid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Tomato Seeds - Cherry - Chelsea OP
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Onion Seeds - Short - Eclipse L303small size packet type seed packaging for - Onion Short Eclipse L303
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Pepper Seeds - Sweet - Keystone Resistant Giant (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Mustard Seeds - Da Ping Pumid size pouch type seed packaging for - Mustard Da Ping Pu
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Lettuce Seeds - Leaf - Bronze Guardmid size pouch type seed packaging for - Lettuce Leaf Bronze Guard
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Radish Seeds - Pink Beauty - Organicsmall size packet type seed packaging for - Radish Pink Beauty Organic
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Corn Seeds - Ornamental - Carouselmid size pouch type seed packaging for - Corn Ornamental Carousel
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Pepper Seeds - Hot - Korean - Beauty Cucumber - Hybridmid size pouch type seed packaging for - Pepper Hot Korean Beauty Cucumber Hybrid
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Pepper Seeds - Hot - Korean - Beauty Cucumber -...
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Tomato Seeds - Slicing - Celebration Hybridmid size pouch type seed packaging for - Tomato Slicing Celebration Hybrid
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Pepper Seeds - Sweet - Cayenne Sweetness Hybridmid size pouch type seed packaging for - Pepper Sweet Cayenne Sweetness Hybrid
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Pepper Seeds - Hot - Garden Salsa Hybridmid size pouch type seed packaging for - Pepper Hot Garden Salsa Hybrid
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Pepper Seeds - Hot - Garden Salsa Hybrid
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Pepper Seeds - Hot - Mushroom Redsmall size packet type seed packaging for - Pepper Hot Mushroom Red
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Pepper Seeds - Hot - Mushroom Red
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Cucumber Seeds - County Fair Improved Hybridsmall size packet type seed packaging for - Cucumber County Fair Improved Hybrid
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Cucumber Seeds - County Fair Improved Hybrid
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Celery Seeds - Giant Golden Pascalmid size pouch type seed packaging for - Celery Giant Golden Pascal
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Lettuce Seeds - Butterhead - Specklessmall size packet type seed packaging for - Lettuce Butterhead Speckles
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custom box packaging for Seed Starter Kit - Hot Pepper
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$16.26 $24.99
Gourd Seeds - Corsican
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Corn Seeds - Dent - Silverminemid size pouch type seed packaging for - Corn Dent Silvermine
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Cucumber Seeds - Eversweet Hybridsmall size packet type seed packaging for - Cucumber Eversweet Hybrid
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Corn Seeds - Sweet - Abundance Hybrid
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Pumpkin Seeds - Mini Harvest F1 Mixsmall size packet type seed packaging for - Pumpkin Mini Harvest F1 Mix
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Starting at $3.99
Tomato Seeds - Salad - Yellow Plummid size pouch type seed packaging for - Tomato Salad Yellow Plum
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Tomato Seeds - Salad - Yellow Plum
Starting at $2.99
Beans - Red Small (Organic) - Sprouting SeedsBeans - Red Small (Organic) - Sprouting Seeds
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Mustard Choho Hybrid Mustard Choho Hybrid
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Mustard Seeds - Misome Choho Hybrid
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Squash Seeds - Summer - Zucchini Spineless Beauty Hybrid (treated)mid size pouch type seed packaging for - Squash Summer Zucchini Spineless Beauty Hybrid treated
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Squash Seeds - Summer - Zucchini Spineless Beauty Hybrid (treated)
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Cucumber Seeds - Salad Bush Hybridmid size pouch type seed packaging for - Cucumber Salad Bush Hybrid
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Lettuce Seeds - Romaine - Viviansmall size packet type seed packaging for - Lettuce Romaine Vivian
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Lettuce Seeds - Romaine - Vivian
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Radish Seeds - Korean - Fall Storage - Hybridmid size pouch type seed packaging for - Radish Korean Fall Storage Hybrid
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Radish Seeds - Korean - Fall Storage - Hybrid
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Onion Seeds - Bunching - Crimson Forest
Starting at $3.09
Onion Seeds - Short - Borettana Yellow Cipollini
Starting at $3.59
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