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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2275 Items
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Garbanzo Bean - Organic - Cover Crop Seeds
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Starting at $6.12
Onion Seeds - Bunching - Kyoto Kujo Negimid size pouch type seed packaging for - Onion Bunching Kyoto Kujo Negi
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Zucchini Seeds - Casertasmall size packet type seed packaging for - Zucchini Caserta
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Lettuce Seeds - Crisphead - Great Lakes Mesa 659small size packet type seed packaging for - Lettuce Crisphead Great Lakes Mesa 659
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Pumpkin Seeds - White Queensmall size packet type seed packaging for - Pumpkin White Queen
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Amaranth Seeds - Polish - Organicsmall size packet type seed packaging for - Amaranth Polish Organic
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$3.69
Rutabaga - American Purple Top - Microgreens SeedsRutabaga - American Purple Top - Microgreens Seeds
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Rutabaga - American Purple Top - Microgreens Seeds
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Watermelon Seeds - Picnic - Cal Sweetmid size pouch type seed packaging for - Watermelon Picnic Cal Sweet
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Watermelon Seeds - Picnic - Cal Sweet
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Cabbage Seeds - All Seasons (Organic)small size packet type seed packaging for - Cabbage All Seasons Organic
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Cabbage Seeds - All Seasons (Organic)
Starting at $3.59
Bean Seeds - Bush - Cannellini (Organic)small size packet type seed packaging for - Bean Bush Cannellini Organic
-38%
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Bean Seeds - Bush - Cannellini (Organic)
Starting at $2.09
Pea Seeds - Snap - Cascadia (Organic)mid size pouch type seed packaging for - Pea Snap Cascadia Organic
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Starting at $3.59
Tomato Seeds - Slicing - Black RussianTomato Seeds - Slicing - Black Russian
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Starting at $3.39
Bean Seeds - Bush - Stringless Green Pod (Burpee)small size packet type seed packaging for - Bean Bush Stringless Green Pod Burpee
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Bean Seeds - Bush - Stringless Green Pod (Burpee)
Starting at $2.63
Pepper Seeds - Sweet - Pimento Lmid size pouch type seed packaging for - Pepper Sweet Pimento L
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Pepper Seeds - Sweet - Pimento L
Starting at $2.99
Okra Seeds - Star Of Davidmid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Starting at $2.99
Watermelon Seeds - Mini - Cal Sweet Bush AASsmall size packet type seed packaging for - Watermelon Mini Cal Sweet Bush AAS
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Pepper Seeds - Hot - Cayenne Purplemid size pouch type seed packaging for - Pepper Hot Cayenne Purple
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Yellow Mustard Microgreens SeedsYellow Mustard Microgreens Seeds
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Tomato Seeds - Salad - Green Zebra (Organic)small size packet type seed packaging for - Tomato Salad Green Zebra Organic
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Lettuce Seeds - Romaine / COS - Dark Green Cossmall size packet type seed packaging for - Lettuce Romaine / COS Dark Green Cos
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Starting at $2.99
Lettuce Seeds - Leaf - Salad Bowl Redmid size pouch type seed packaging for - Lettuce Leaf Salad Bowl Red
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Starting at $2.99
Bean Seeds - Bush - Contender (Organic)small size packet type seed packaging for - Bean Bush Contender Organic
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Starting at $3.77
Tomato Seeds - Salad - Arkansas Travelermid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Tomato Seeds - Salad - Arkansas Traveler
Starting at $3.29
Chinese Cabbage Seeds - Aichimid size pouch type seed packaging for - Chinese Cabbage Aichi
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Starting at $3.99
Kale - Dwarf Vates Blue Scotch Curled (Organic) - Microgreens Seedsmid size pouch type seed packaging for - Kale Dwarf Vates Blue Scotch Curled Organic Microgreens
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Kale - Dwarf Vates Blue Scotch Curled (Organic) - Microgreens...
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Pea Seeds - Shelling - Progress No. 9 (Organic)small size packet type seed packaging for - Pea Shelling Progress No 9 Organic
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Broccoli Seeds - Romanesco
Starting at $2.99
Tomato Seeds - Slicing - Heirloom Rainbow Blend
Starting at $2.99
Seed Potatoes - Spring - Yukon Gold (Organic)
Starting at $19.33
Pepper Seeds, Sweet - Marconi Red (Organic)
Starting at $3.79
Bean Seeds - Bush - Light Red Kidney (Organic)
Starting at $3.20
Corn Salad Seeds - French
Starting at $2.99
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