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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.

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Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
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Pea - Green (Organic) - Microgreens SeedsPea - Green (Organic) - Microgreens Seeds
-0
Heirloom
Organic
Pea - Green (Organic) - Microgreens Seeds
Starting at $9.08
Cilantro - Slow Bolt - Microgreens SeedsCilantro - Slow Bolt - Microgreens Seeds
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Staff Favorite
Cilantro - Slow Bolt - Microgreens Seeds
Starting at $4.86
Basil - Genovese - Microgreens SeedsBasil - Genovese - Microgreens Seeds
-22%
Heirloom
Basil - Genovese - Microgreens Seeds
Starting at $6.32
Basil Seeds - Italian Large Leafmid size pouch type seed packaging for - Basil Italian Large Leaf
-0
Heirloom
Basil Seeds - Italian Large Leaf
Starting at $2.99
Pea Seeds - Snap - Sugar SnapPea Seeds - Snap - Sugar Snap
-0
AAS Winner
Heirloom
Pea Seeds - Snap - Sugar Snap
Starting at $3.09
Lettuce Seeds - Mixed Greens - Gourmet MixtureLettuce Seeds - Mixed Greens - Gourmet Mixture
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Heirloom
Lettuce Seeds - Mixed Greens - Gourmet Mixture
Starting at $2.99
Bean Seeds - Bush - Blue Lake 274mid size pouch type seed packaging for - Bean Bush Blue Lake 274
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Bean Seeds - Bush - Blue Lake 274
Starting at $2.99
Cabbage Seeds - Golden Acremid size pouch type seed packaging for - Cabbage Golden Acre
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Heirloom
Cabbage Seeds - Golden Acre
Starting at $2.99
Broccoli Seeds - Waltham 29 (Organic)small size packet type seed packaging for - Broccoli Waltham 29 Organic
-0
Heirloom
Organic
Broccoli Seeds - Waltham 29 (Organic)
Starting at $3.59
custom packaging for minute soil compressed coconut coir pucksMinute Soil - Compressed Coconut Coir Pucks (Organic)
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Minute Soil - Compressed Coconut Coir Pucks (Organic)
Starting at $10.38
Peppermint Seedsmid size pouch type seed packaging for - Peppermint
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Peppermint Seeds
Starting at $3.39
Squash Seeds - Winter - Waltham ButternutSquash Seeds - Winter - Waltham Butternut
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AAS Winner
Heirloom
Squash Seeds - Winter - Waltham Butternut
Starting at $2.99
Tomato Seeds - Paste - Roma VFTomato Seeds - Paste - Roma VF
-0
Heirloom
Tomato Seeds - Paste - Roma VF
Starting at $3.79
Bean Seeds - Pole - Blue Lake FM1Kmid size pouch type seed packaging for - Bean Pole Blue Lake FM1K
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Bean Seeds - Pole - Blue Lake FM1K
Starting at $3.58
Emergency Heirloom Bug Out Seed BagEmergency Heirloom Bug Out Seed Bag
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Heirloom
Emergency Heirloom Bug Out Seed Bag
$39.74
custom box packaging for Mini Microgreens Growing Kits (Organic)Mini Microgreens Growing Kits (Organic)
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Organic
Mini Microgreens Growing Kits (Organic)
Starting at $6.99
Pumpkin Seeds - Sugar Piemid size pouch type seed packaging for - Pumpkin Sugar Pie
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Pumpkin Seeds - Sugar Pie
Starting at $2.99
Pepper Seeds - Sweet - Cal Wonder (Organic)small size packet type seed packaging for - Pepper Sweet Cal Wonder Organic
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Organic
Pepper Seeds - Sweet - Cal Wonder (Organic)
Starting at $3.99
Tomato Seeds - Cherry - Large Red CherryTomato Seeds - Cherry - Large Red Cherry
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Tomato Seeds - Cherry - Large Red Cherry
Starting at $2.99
Spinach Seeds - Bloomsdale Long Standing (Organic)mid size pouch type seed packaging for - Spinach Bloomsdale Long Standing Organic
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Starting at $3.59
Red Clover - Organic - Sprouting SeedsRed Clover - Organic - Sprouting Seeds
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Red Clover - Organic - Sprouting Seeds
Starting at $5.39
Carrot Seeds - Danvers 126Carrot Seeds - Danvers 126
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Carrot Seeds - Danvers 126
Starting at $2.99
5 x 5 Small Growing Tray Inserts (with Drain Holes)5 x 5 Small Growing Tray Inserts (with Drain Holes)
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Starting at $6.06
Radish - China Rose (Conventional) - Microgreens SeedsRadish - China Rose (Conventional) - Microgreens Seeds
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Heirloom
Radish - China Rose (Conventional) - Microgreens Seeds
Starting at $3.99
Tomato Seeds - Cherry - Supersweet 100 Hybridmid size pouch type seed packaging for - Tomato Cherry Supersweet 100 Hybrid
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Starting at $4.09
10 x10 Growing Trays WITHOUT Drain Holes10 x10 Growing Trays WITHOUT Drain Holes
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Radish - Rambo - Microgreens Seeds
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Okra Seeds - Clemson Spineless
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Onion Seeds - Long - Utah Yellow Sweet Spanish
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Parsley Seeds - Dark Green Italian Flat-leaf
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Brussels Sprouts Seeds - Long Island Improved
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Squash Seeds - Summer - Crookneck
Starting at $2.99
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