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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3010 Items
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Tomato Seeds - Cherry - Rainbow Cherry Mix (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-0
Heirloom
Organic
Tomato Seeds - Cherry - Rainbow Cherry Mix (Organic)
Starting at $3.59
Radish Seeds - Cover Crop - Daikon Minowase (Organic)Radish Seeds - Cover Crop - Daikon Minowase (Organic)
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Radish Seeds - Cover Crop - Daikon Minowase (Organic)
Starting at $7.85
Dill Seeds - Mammoth Long Islandmid size pouch type seed packaging for - Dill Mammoth Long Island
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Heirloom
Dill Seeds - Mammoth Long Island
Starting at $2.99
Eggplant Seeds - Long Purple (Organic)
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Eggplant Seeds - Long Purple (Organic)
Starting at $3.59
Basil Seeds - Lemonmid size pouch type seed packaging for - Basil Lemon
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Basil Seeds - Lemon
Starting at $2.99
Wild Bergamot Seeds - Bee Balmmid size pouch type seed packaging for - Wild Bergamot Bee Balm
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Wild Bergamot Seeds - Bee Balm
Starting at $2.99
Tomato Seeds - Slicing - Jet Star HybridTomato Seeds - Slicing - Jet Star Hybrid
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Tomato Seeds - Slicing - Jet Star Hybrid
Starting at $4.49
Purslane Seeds - Greenmid size pouch type seed packaging for - Purslane Green
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Heirloom
Purslane Seeds - Green
Starting at $2.99
Tomato Seeds - Slicing - Black Krim (Organic)small size packet type seed packaging for - Tomato Slicing Black Krim Organic
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Organic
Tomato Seeds - Slicing - Black Krim (Organic)
Starting at $3.59
Pea Seeds - Snap - Sugar Annmid size pouch type seed packaging for - Pea Snap Sugar Ann
-0
AAS Winner
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Pea Seeds - Snap - Sugar Ann
Starting at $3.29
Strawberry Seeds - Berries Galore Hybrid PinkStrawberry Seeds - Berries Galore Hybrid Pink
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Strawberry Seeds - Berries Galore Hybrid Pink
Starting at $7.49
Lettuce Seeds - Leaf - Ruby Redmid size pouch type seed packaging for - Lettuce Leaf Ruby Red
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AAS Winner
Heirloom
Lettuce Seeds - Leaf - Ruby Red
Starting at $2.99
Dahlia Seeds - Figaro Series (Coated)Dahlia Seeds - Figaro Series (Coated)
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Mighty Mustard® Trifecta Power Blend - Cover Crop Seedsmid size pouch type seed packaging for - Mighty Mustard® Trifecta Power Blend Cover Crop
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Mighty Mustard® Trifecta Power Blend - Cover Crop Seeds
Starting at $6.06
Tomato Seeds - Cherry - Isis Candysmall size packet type seed packaging for - Tomato Cherry Isis Candy
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Tomato Seeds - Cherry - Isis Candy
Starting at $2.99
Corn Salad (Mache) Seeds - Dutch Broad Leavedmid size pouch type seed packaging for - Corn Salad Mache Dutch Broad Leaved
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Corn Salad (Mache) Seeds - Dutch Broad Leaved
Starting at $2.99
Pepper Seeds - Sweet - ShishitoPepper Seeds - Sweet - Shishito
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Pepper Seeds - Sweet - Shishito
Starting at $3.99
Broccoli Seeds - Green Sprouting Calabresesmall size packet type seed packaging for - Broccoli Green Sprouting Calabrese
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Broccoli Seeds - Green Sprouting Calabrese
Starting at $2.99
Beet Seeds - Sugar Beetsmall size packet type seed packaging for - Beet Sugar Beet
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Starting at $3.39
Rutabaga Seeds - American Purple Top
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Rutabaga Seeds - American Purple Top
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Broccoli Seeds - Di Cicco (Organic)small size packet type seed packaging for - Broccoli Di Cicco Organic
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Organic
Broccoli Seeds - Di Cicco (Organic)
Starting at $3.59
Squash Seeds - Summer - Cocozelle Zucchinismall size packet type seed packaging for - Squash Summer Cocozelle Zucchini
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Heirloom
Squash Seeds - Summer - Cocozelle Zucchini
Starting at $2.99
No-Till Forage Friendly Cover Crop MixNo-Till Forage Friendly Cover Crop Mix
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No-Till Forage Friendly Cover Crop Mix
Starting at $5.13
Wildflower Seeds - Hummingbird and ButterflyWildflower Seeds - Hummingbird and Butterfly
-16%
Wildflower Seeds - Hummingbird and Butterfly
$9.58 $11.44
Thyme Seeds - Frenchsmall size packet type seed packaging for - Thyme French
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Heirloom
Thyme Seeds - French
Starting at $3.29
Beet Seeds - Chioggiasmall size packet type seed packaging for - Beet Chioggia
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Beet Seeds - Chioggia
Starting at $2.99
Cucumber Seeds - Tendergreen Burpless (Organic)small size packet type seed packaging for - Cucumber Tendergreen Burpless Organic
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Heirloom
Organic
Cucumber Seeds - Tendergreen Burpless (Organic)
Starting at $3.59
Bean Seeds - Bush - Top Notch Golden Waxmid size pouch type seed packaging for - Bean Bush Top Notch Golden Wax
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Bean Seeds - Bush - Top Notch Golden Wax
Starting at $2.99
Bean Seeds - Bush - Henderson Limamid size pouch type seed packaging for - Bean Bush Henderson Lima
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Bean Seeds - Bush - Henderson Lima
Starting at $3.09
Zucchini Seeds - Cocozelle - Organicmid size pouch type seed packaging for - Zucchini Cocozelle Organic
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Organic
Zucchini Seeds - Cocozelle - Organic
Starting at $3.59
Basil Seeds - Green Leaf Holy Basilmid size pouch type seed packaging for - Basil Green Leaf Holy Basil
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Basil Seeds - Green Leaf Holy Basil
Starting at $3.99
Corn Seeds - Sweet - Silver Queen Hybrid
Starting at $3.81
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