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
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
3004 Items
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Pepper Seeds - Hot - Hungarian Yellow Waxmid size pouch type seed packaging for - Pepper Hot Hungarian Yellow Wax
-35%
Heirloom
Pepper Seeds - Hot - Hungarian Yellow Wax
Starting at $1.99
Cucumber Seeds - National Picklingsmall size packet type seed packaging for - Cucumber National Pickling
-0
Heirloom
Cucumber Seeds - National Pickling
Starting at $2.99
Eggplant Seeds - Purple Shine - Hybridmid size pouch type seed packaging for - Eggplant Purple Shine Hybrid
-0
Eggplant Seeds - Purple Shine - Hybrid
Starting at $3.99
Radish Seeds - Lady Slippermid size pouch type seed packaging for - Radish Lady Slipper
-0
Heirloom
Radish Seeds - Lady Slipper
Starting at $2.99
Eggplant Seeds - Little Finger Purplesmall size packet type seed packaging for - Eggplant Little Finger Purple
-0
Heirloom
Eggplant Seeds - Little Finger Purple
Starting at $3.39
Lettuce Seeds - Tom Thumbsmall size packet type seed packaging for - Lettuce Tom Thumb
-0
Heirloom
Lettuce Seeds - Tom Thumb
Starting at $2.99
Alyssum Seeds - Carpet of Snowmid size pouch type seed packaging for - Alyssum Carpet of Snow
-0
Alyssum Seeds - Carpet of Snow
Starting at $2.99
Corn Seeds - Sweet - Sugar Buns Hybridmid size pouch type seed packaging for - Corn Sweet Sugar Buns Hybrid
-0
Corn Seeds - Sweet - Sugar Buns Hybrid
Starting at $4.09
Carrot Seeds - Kuroda Long 8"
-0
Heirloom
Carrot Seeds - Kuroda Long 8"
Starting at $3.99
French Marigold Seeds - Janie SeriesFrench Marigold Seeds - Janie Series
-0
AAS Winner
French Marigold Seeds - Janie Series
Starting at $2.99
Sorghum Seeds - Rox Orange Syrup Canesmall size packet type seed packaging for - Sorghum Rox Orange Syrup Cane
-0
Heirloom
Sorghum Seeds - Rox Orange Syrup Cane
Starting at $2.99
Echinacea Seeds - White Swanmid size pouch type seed packaging for - Echinacea White Swan
-0
Echinacea Seeds - White Swan
Starting at $3.39
Gourds Seeds - Small Mixmid size pouch type seed packaging for - Gourds Small Mix
-0
Heirloom
Gourds Seeds - Small Mix
Starting at $3.29
Orach Seeds (French Spinach) - Red Firemid size pouch type seed packaging for - Orach French Spinach Red Fire
-0
Heirloom
Orach Seeds (French Spinach) - Red Fire
Starting at $3.29
Pepper Seeds - Sweet - Fushimimid size pouch type seed packaging for - Pepper Sweet Fushimi
-0
Heirloom
Pepper Seeds - Sweet - Fushimi
Starting at $3.99
Gourd Bitter IndiaGourd Bitter India
-0
Gourd Seeds, Bitter - India - Hybrid
Starting at $3.99
Squash - Summer - Dark Green Zucchini (Organic)
-0
Heirloom
Organic
Squash - Summer - Dark Green Zucchini (Organic)
Starting at $3.39
Rutabaga Seeds - LaurentianRutabaga Seeds - Laurentian
-0
Heirloom
Rutabaga Seeds - Laurentian
Starting at $2.99
Caraway Seedssmall size packet type seed packaging for - Caraway
-0
Heirloom
Caraway Seeds
Starting at $2.99
Radish Seeds - Easter Egg BlendRadish Seeds - Easter Egg Blend
-0
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Radish Seeds - Easter Egg Blend
Starting at $2.99
Tomato Seeds - Slicing - Peron Spraylesssmall size packet type seed packaging for - Tomato Slicing Peron Sprayless
-0
Heirloom
Tomato Seeds - Slicing - Peron Sprayless
Starting at $3.69
Radish Seeds - Korean - Cheong Du - Hybridmid size pouch type seed packaging for - Radish Korean Cheong Du Hybrid
-30%
Radish Seeds - Korean - Cheong Du - Hybrid
Starting at $2.79
Pea Seeds - Snow - Taiwan Sugar (Organic)small size packet type seed packaging for - Pea Snow Taiwan Sugar Organic
-0
Heirloom
Organic
Pea Seeds - Snow - Taiwan Sugar (Organic)
Starting at $3.39
Turnip Seeds - Seven Topsmall size packet type seed packaging for - Turnip Seven Top
-0
Heirloom
Turnip Seeds - Seven Top
Starting at $2.99
Parsley Seeds - Plain or Single (Organic)small size packet type seed packaging for - Parsley Plain or Single Organic
-0
Heirloom
Organic
Parsley Seeds - Plain or Single (Organic)
Starting at $3.59
Corn Seeds - Popcorn - Glass Gemmid size pouch type seed packaging for - Corn Popcorn Glass Gem
-0
Corn Seeds - Popcorn - Glass Gem
Starting at $4.29
Squash Seeds - Summer - Sunburst Hybridmid size pouch type seed packaging for - Squash Summer Sunburst Hybrid
-0
AAS Winner
Squash Seeds - Summer - Sunburst Hybrid
Starting at $4.79
Lavender Seeds - Munstead
-4%
Heirloom
Lavender Seeds - Munstead
Starting at $3.99
Pepper Seeds - Sweet - Sweet Picklesmall size packet type seed packaging for - Pepper Sweet Sweet Pickle
-0
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Pepper Seeds - Sweet - Sweet Pickle
Starting at $3.89
Yellow Soybeans (Organic) - Bulk Grains & Foodssmall size packet type seed packaging for - Yellow Soybeans Organic Bulk Grains & Foods
-0
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Yellow Soybeans (Organic) - Bulk Grains & Foods
Starting at $3.59
Parsley Seeds - Italian Giant
Starting at $2.99
Garlic Bulbs - Fall - Hardneck - German Red
$16.88
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