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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.

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
2353 Items
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Cabbage Seeds - Charleston Wakefieldsmall size packet type seed packaging for - Cabbage Charleston Wakefield
-0
Heirloom
Cabbage Seeds - Charleston Wakefield
Starting at $2.99
Beet Seeds - Early Wonder - Organicsmall size packet type seed packaging for - Beet Early Wonder Organic
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Heirloom
Organic
Beet Seeds - Early Wonder - Organic
Starting at $3.59
Lettuce Seeds - Parris Island Cos - Organicsmall size packet type seed packaging for - Lettuce Parris Island Cos Organic
-0
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Organic
Lettuce Seeds - Parris Island Cos - Organic
Starting at $3.59
Tomato Seeds - Slicing - Black From Tulamid size pouch type seed packaging for - Tomato Slicing Black From Tula
-0
Heirloom
Tomato Seeds - Slicing - Black From Tula
Starting at $2.99
Pumpkin Seeds - Montana Jacksmall size packet type seed packaging for - Pumpkin Montana Jack
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Heirloom
Pumpkin Seeds - Montana Jack
Starting at $2.99
Cucumber Seeds - Summer Top - Hybridmid size pouch type seed packaging for - Cucumber Summer Top Hybrid
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Cucumber Seeds - Summer Top - Hybrid
Starting at $3.99
Pak Choi Seeds - Tasty Pagoda Purple Hybrid
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Pak Choi Seeds - Tasty Pagoda Purple Hybrid
Starting at $3.99
Pumpkin Seeds - Wolfmid size pouch type seed packaging for - Pumpkin Wolf
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Heirloom
Pumpkin Seeds - Wolf
Starting at $4.89
Squash Seeds - Dark Green Zucchinismall size packet type seed packaging for - Squash Dark Green Zucchini
-31%
Heirloom
Squash Seeds - Dark Green Zucchini
Starting at $1.99
Pea Seeds - Snow - Oregon Sugar Pod II (Organic)small size packet type seed packaging for - Pea Snow Oregon Sugar Pod II Organic
-0
Heirloom
Organic
Pea Seeds - Snow - Oregon Sugar Pod II (Organic)
Starting at $3.20
Carrot Seeds - Autumn King / FlakkeeCarrot Seeds - Autumn King / Flakkee
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Heirloom
Carrot Seeds - Autumn King / Flakkee
Starting at $2.99
Radish, Daikon (Organic) - Vegetable SeedsRadish, Daikon (Organic) - Vegetable Seeds
-0
Heirloom
Organic
Radish, Daikon (Organic) - Vegetable Seeds
Starting at $7.85
Carrot Seeds - Yellowsmall size packet type seed packaging for - Carrot Yellow
-39%
Heirloom
Carrot Seeds - Yellow
Starting at $1.99
Chard Seeds - Fordhook Giant - Organicsmall size packet type seed packaging for - Chard Fordhook Giant Organic
-0
Heirloom
Organic
Chard Seeds - Fordhook Giant - Organic
Starting at $3.59
Tomato Seeds - Cherry - Baxter's Early Bushmid size pouch type seed packaging for - Tomato Cherry Baxters Early Bush
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Heirloom
Tomato Seeds - Cherry - Baxter's Early Bush
Starting at $3.29
Tomato Seeds - Slicing - Mountain Pride Hybridsmall size packet type seed packaging for - Tomato Slicing Mountain Pride Hybrid
-55%
Tomato Seeds - Slicing - Mountain Pride Hybrid
Starting at $1.99
Chinese Celery Seeds - Light Greenmid size pouch type seed packaging for - Chinese Celery Light Green
-0
Heirloom
Chinese Celery Seeds - Light Green
Starting at $3.99
Tomato Seeds - Slicing - Coustraleesmall size packet type seed packaging for - Tomato Slicing Coustralee
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Heirloom
Tomato Seeds - Slicing - Coustralee
Starting at $4.39
Squash Seeds - Winter - Marina Di Chioggiasmall size packet type seed packaging for - Squash Winter Marina Di Chioggia
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Squash Seeds - Winter - Marina Di Chioggia
Starting at $3.39
Cucumber Seeds - Sumter (Organic)small size packet type seed packaging for - Cucumber Sumter Organic
-41%
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Organic
Cucumber Seeds - Sumter (Organic)
Starting at $1.99
Corn Seeds - Dent - Lancaster Sure Cropsmall size packet type seed packaging for - Corn Dent Lancaster Sure Crop
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Corn Seeds - Dent - Lancaster Sure Crop
Starting at $2.63
Chinese Cabbage Seeds - Beka Santohmid size pouch type seed packaging for - Chinese Cabbage Beka Santoh
-50%
Heirloom
Chinese Cabbage Seeds - Beka Santoh
Starting at $1.99
Eggplant Seeds - Black Shine - Hybridmid size pouch type seed packaging for - Eggplant Black Shine Hybrid
-60%
Eggplant Seeds - Black Shine - Hybrid
Starting at $1.99
Squash Seeds - Winter - Pink Banana Jumbo (Organic)
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Heirloom
Organic
Squash Seeds - Winter - Pink Banana Jumbo (Organic)
Starting at $3.59
Corn Seeds - Sweet - Bodacious Hybrid R/M (treated)mid size pouch type seed packaging for - Corn Sweet Bodacious Hybrid R/M treated
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Corn Seeds - Sweet - Bodacious Hybrid R/M (treated)
Starting at $12.53
Tomato Seeds - Slicing - Best Boy Bush Hybrid
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Starting at $4.29
Pumpkin Seeds - Lil Pump-ke-mon (Treated)Pumpkin Seeds - Lil Pump-ke-mon (Treated)
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Heirloom
Pumpkin Seeds - Lil Pump-ke-mon (Treated)
Starting at $5.99
Tomato Seeds - Cherry - Sugary Hybridsmall size packet type seed packaging for - Tomato Cherry Sugary Hybrid
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AAS Winner
Tomato Seeds - Cherry - Sugary Hybrid
Starting at $4.89
 Gourd Bitter Tai Guo
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Gourd Seeds - Bitter Tai Guo Hybrid
Starting at $3.99
Squash Seeds - Winter - Tahitian (Organic)
$4.79
Tomato Seeds - Salad - Green Zebra
Starting at $2.99
Pepper Seeds - Hot - Biquinho Red
Starting at $2.99
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