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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2496 Items
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Thyme Seeds - Winter
-0
Thyme Seeds - Winter
Starting at $2.99
Melon Seeds - Cantaloupe - Hearts of Goldmid size pouch type seed packaging for - Melon Cantaloupe Hearts of Gold
-28%
Heirloom
Melon Seeds - Cantaloupe - Hearts of Gold
Starting at $1.99
Cabbage Seeds - Savoy Perfectionsmall size packet type seed packaging for - Cabbage Savoy Perfection
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Cabbage Seeds - Savoy Perfection
Starting at $2.99
Petunia Seeds - Double Cascade Series (Pelleted)Petunia Seeds - Double Cascade Series (Pelleted)
-2%
Petunia Seeds - Double Cascade Series (Pelleted)
Starting at $3.29
Kale Seeds - Premiermid size pouch type seed packaging for - Kale Premier
-33%
Heirloom
Kale Seeds - Premier
Starting at $1.99
Tomato Seeds - Cherry - Yellow Pearmid size pouch type seed packaging for - Tomato Cherry Yellow Pear
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Tomato Seeds - Cherry - Yellow Pear
Starting at $3.69
Cucumber Seeds - Sweet Success Hybridmid size pouch type seed packaging for - Cucumber Sweet Success Hybrid
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AAS Winner
Cucumber Seeds - Sweet Success Hybrid
Starting at $7.89
Zinnia Seeds - Zahara Series (Coated)Zinnia Seeds - Zahara Series (Coated)
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Zinnia Seeds - Zahara Series (Coated)
Starting at $3.89
Pepper Seeds - Hot - Bhut Jolokia Ghostsmall size packet type seed packaging for - Pepper Hot Bhut Jolokia Ghost
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Heirloom
Pepper Seeds - Hot - Bhut Jolokia Ghost
Starting at $4.89
Lettuce Seeds - Leaf - Oakleafmid size pouch type seed packaging for - Lettuce Leaf Oakleaf
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Lettuce Seeds - Leaf - Oakleaf
Starting at $2.79
Lettuce Seeds - Leaf - Salad Bowl Greensmall size packet type seed packaging for - Lettuce Leaf Salad Bowl Green
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Lettuce Seeds - Leaf - Salad Bowl Green
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Cabbage Seeds - Early Round Dutchsmall size packet type seed packaging for - Cabbage Early Round Dutch
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Cabbage Seeds - Early Round Dutch
Starting at $2.99
Bean Seeds - Bush - Blue Lake (Organic)small size packet type seed packaging for - Bean Bush Blue Lake Organic
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Organic
Bean Seeds - Bush - Blue Lake (Organic)
Starting at $3.59
Bean Seeds - Bush - Royal Burgundymid size pouch type seed packaging for - Bean Bush Royal Burgundy
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Bean Seeds - Bush - Royal Burgundy
Starting at $3.29
Tomato Seeds - Cherry - Gold Nuggetmid size pouch type seed packaging for - Tomato Cherry Gold Nugget
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Tomato Seeds - Cherry - Gold Nugget
Starting at $3.29
Onion Seeds - Bunching - Evergreen White Nebuka
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Onion Seeds - Bunching - Evergreen White Nebuka
Starting at $3.99
Lettuce Seeds - Leaf - Grand Rapidsmid size pouch type seed packaging for - Lettuce Leaf Grand Rapids
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Lettuce Seeds - Leaf - Grand Rapids
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Gourds Seeds - Birdhousemid size pouch type seed packaging for - Gourds Birdhouse
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Gourds Seeds - Birdhouse
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Pepper Seeds - Hot - Tabascomid size pouch type seed packaging for - Pepper Hot Tabasco
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Starting at $2.99
Pepper Seeds - Hot - Big JimPepper Seeds - Hot - Big Jim
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Pepper Seeds - Hot - Big Jim
Starting at $2.99
Lettuce Seeds - Super Red Romainesmall size packet type seed packaging for - Lettuce Super Red Romaine
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Lettuce Seeds - Super Red Romaine
Starting at $2.99
African Marigold Seeds - Taishan SeriesAfrican Marigold Seeds - Taishan Series
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African Marigold Seeds - Taishan Series
Starting at $3.79
Mixed Greens Seeds - Mesclun Mix - Organicsmall size packet type seed packaging for - Mixed Greens Mesclun Mix Organic
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Organic
Mixed Greens Seeds - Mesclun Mix - Organic
Starting at $3.59
Corn Seeds - Flour - Painted Mountain (Organic)small size packet type seed packaging for - Corn Flour Painted Mountain Organic
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Heirloom
Organic
Corn Seeds - Flour - Painted Mountain (Organic)
Starting at $4.76
Onion Seeds - Long - White Sweet Spanishmid size pouch type seed packaging for - Onion Long White Sweet Spanish
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Heirloom
Onion Seeds - Long - White Sweet Spanish
Starting at $2.99
Bean Seeds - Pole - Scarlet Runnermid size pouch type seed packaging for - Bean Pole Scarlet Runner
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Bean Seeds - Pole - Scarlet Runner
Starting at $2.99
Cabbage Seeds - Golden Acre (Organic)
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Cabbage Seeds - Golden Acre (Organic)
Starting at $3.59
Onion Seeds - Long - Ruby
Starting at $2.99
Portulaca Seeds - Double Mix
Starting at $2.99
Cucumber Seeds - Metki Pale Green Armenian Yard-Long
Starting at $2.99
Dandelion Seeds - True (Wild)
Starting at $3.39
Italian Dandelion Seeds
Starting at $2.99
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