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
580 Items
{ "manual": "Featured", "most-relevant": "Most relevant", "best-selling": "Best selling", "title-ascending": "Alphabetically, A-Z", "title-descending": "Alphabetically, Z-A", "price-ascending": "Price, low to high", "price-descending": "Price, high to low", "created-ascending": "Date, old to new", "created-descending": "Date, new to old" }
Celosia Seeds - Plumed - Kimono Mixturemid size pouch type seed packaging for - Celosia Plumed Kimono Mixture
-0
Celosia Seeds - Plumed - Kimono Mixture
Starting at $3.59
Petunia Seeds - Double Cascade Valentine Mix (pelleted)mid size pouch type seed packaging for - Petunia Double Cascade Valentine Mix pelleted
-2%
Petunia Seeds - Double Cascade Valentine Mix (pelleted)
Starting at $3.39
Nasturtium Seeds - Jewel Mix (Organic)Nasturtium Seeds - Jewel Mix (Organic)
-17%
Heirloom
Organic
Nasturtium Seeds - Jewel Mix (Organic)
Starting at $11.39
Sesame Seeds - Tan Kingomamid size pouch type seed packaging for - Sesame Tan Kingoma
-0
Heirloom
Sesame Seeds - Tan Kingoma
Starting at $3.99
Agastache Seeds - Arizona Sunmid size pouch type seed packaging for - Agastache Arizona Sun
-0
Agastache Seeds - Arizona Sun
Starting at $4.09
Chrysanthemum Seeds - Broad Leaf, EdibleChrysanthemum Seeds - Broad Leaf, Edible
-0
Heirloom
Chrysanthemum Seeds - Broad Leaf, Edible
Starting at $2.99
Heliopsis Seeds - Summer Sunmid size pouch type seed packaging for - Heliopsis Summer Sun
-0
Heliopsis Seeds - Summer Sun
Starting at $2.99
Pepper Seeds - Sweet & Spicy Mix
-0
Staff Favorite
Pepper Seeds - Sweet & Spicy Mix
Starting at $3.69
Salvia Seeds - Evolution Violetmid size pouch type seed packaging for - Salvia Evolution Violet
-0
AAS Winner
Salvia Seeds - Evolution Violet
Starting at $3.99
Mimosa Seeds - Sensitive PlantMimosa Seeds - Sensitive Plant
-0
Mimosa Seeds - Sensitive Plant
Starting at $2.99
Dusty Miller Seeds - Silverdustmid size pouch type seed packaging for - Dusty Miller Silverdust
-0
Dusty Miller Seeds - Silverdust
$11.90
Aster Seeds - Benarys Trimix
-0
Aster Seeds - Benarys Trimix
Starting at $2.99
Rudbeckia Seeds - Indian Summer (Coated)mid size pouch type seed packaging for - Rudbeckia Indian Summer Coated
-0
AAS Winner
Rudbeckia Seeds - Indian Summer (Coated)
Starting at $3.39
Ratibida Seeds - Mexican Hatsmall size packet type seed packaging for - Ratibida Mexican Hat
-0
Ratibida Seeds - Mexican Hat
Starting at $2.99
Wildflower Seeds - Eastern Pollinator Mixsmall size packet type seed packaging for - Wildflower Eastern Pollinator Mix
-0
Wildflower Seeds - Eastern Pollinator Mix
Starting at $3.69
Zinnia Seeds - Magellan Series - Orangemid size pouch type seed packaging for - Zinnia Magellan Series Orange
-61%
Zinnia Seeds - Magellan Series - Orange
Starting at $1.99
Thunbergia Seeds - Alata Mixmid size pouch type seed packaging for - Thunbergia Alata Mix
-0
Thunbergia Seeds - Alata Mix
Starting at $2.99
Celosia Seeds - Crested - Prestige ScarletCelosia Seeds - Crested - Prestige Scarlet
-0
AAS Winner
Celosia Seeds - Crested - Prestige Scarlet
Starting at $3.89
Celosia Seeds - Plumed - New Look (Pelleted)mid size pouch type seed packaging for - Celosia Plumed New Look Pelleted
-0
AAS Winner
Celosia Seeds - Plumed - New Look (Pelleted)
Starting at $3.99
Chrysanthemum Seeds - Snowlandmid size pouch type seed packaging for - Chrysanthemum Snowland
-0
Chrysanthemum Seeds - Snowland
Starting at $5.19
Dahlberg Daisy Seeds - Golden Fleecemid size pouch type seed packaging for - Dahlberg Daisy Golden Fleece
-0
Dahlberg Daisy Seeds - Golden Fleece
Starting at $3.29
Myosotis Compindi (Forget-Me-Not) Seedsmid size pouch type seed packaging for - Myosotis Compindi Forget-Me-Not
-0
Myosotis Compindi (Forget-Me-Not) Seeds
Starting at $3.39
Hollyhock Seeds - Nigra
Starting at $2.99
Calendula Seeds - Orange Pacific Beauty (Organic)
Starting at $3.59
Zinnia Seeds - Canary Bird
Starting at $2.99
Cotton Seeds - American Upland (Treated)
Starting at $3.39
Sunflower Seeds - Midnight Rouge
Starting at $4.19
Bachelor Buttons Seeds - Jubilee - Organic
Starting at $3.59
Yu Choy Sum Seeds - Late Green
Starting at $3.99
Amaranthus Seeds - Love Lies Bleeding
Starting at $2.99
Groundcover - Grass and Flower Pollinator Field Mix
Starting at $2.99
Nicotiana Seeds - Perfume Deep Purple (Pelleted)
Starting at $4.39
[ { "featured_image": "files/celosia-plumed-kimono-series-mixture-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_73f7c1dd-f819-4cf1-83dd-620cc48f76cb.png", "price": 359, "handle": "celosia-plumed-kimono-series-mixture-flower-seeds", "title": "Celosia Seeds - Plumed - Kimono Mixture", "url": "/products/celosia-plumed-kimono-series-mixture-flower-seeds", "available": true }, { "featured_image": "files/hollyhock-seeds-nigra-Comp.jpg", "secondary_image": "files/Flower_1lb_7bfbeb96-816e-443f-87e7-6f7a7a40e2cb.jpg", "price": 299, "handle": "hollyhock-seeds-nigra", "title": "Hollyhock Seeds - Nigra", "url": "/products/hollyhock-seeds-nigra", "available": false }, { "featured_image": "files/petunia-valentine-pelleted-flower-seed-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_37f53a59-78bf-4e3b-b5be-bebfa5c0f2fd.jpg", "price": 339, "handle": "petunia-valentine-pelleted-flower-seed", "title": "Petunia Seeds - Double Cascade Valentine Mix (pelleted)", "url": "/products/petunia-valentine-pelleted-flower-seed", "available": true }, { "featured_image": "files/1708538365_Flower-Nasturtium_-Jewel-Mix-organic-comp_c061192d-ed73-4fff-b700-92e718406a8c.jpg", "secondary_image": "files/1708538396_Flower-Nasturtium_-Jewel-Mix-organic-2-comp_eba67bda-a685-40e8-83c8-af96a945a588.jpg", "price": 1139, "handle": "nasturtium-seeds-jewel-mix-organic", "title": "Nasturtium Seeds - Jewel Mix (Organic)", "url": "/products/nasturtium-seeds-jewel-mix-organic", "available": true }, { "featured_image": "files/1741109329_calendula_orange_pacific_beauty_organic_comp_f4a3914e-b530-4b40-8402-8fa858908724.jpg", "secondary_image": "", "price": 359, "handle": "calendula-seeds-orange-pacific-beauty-organic", "title": "Calendula Seeds - Orange Pacific Beauty (Organic)", "url": "/products/calendula-seeds-orange-pacific-beauty-organic", "available": false }, { "featured_image": "files/sesame-seeds-tan-kingoma-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_9d3d6513-4e77-4dbf-8a62-6f1e98ce697e.png", "price": 399, "handle": "sesame-seeds-tan-kingoma", "title": "Sesame Seeds - Tan Kingoma", "url": "/products/sesame-seeds-tan-kingoma", "available": true }, { "featured_image": "files/canary-bird-zinna-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_1_1_2_1_ea51bc28-58e7-47e1-bd13-53bb407f8d1d.jpg", "price": 299, "handle": "canary-bird-zinna", "title": "Zinnia Seeds - Canary Bird", "url": "/products/canary-bird-zinna", "available": false }, { "featured_image": "files/cotton-seeds-american-upland-Comp.jpg", "secondary_image": "products/1637002154_cotton-american-upland-com-wm.jpg", "price": 339, "handle": "cotton-seeds-american-upland", "title": "Cotton Seeds - American Upland (Treated)", "url": "/products/cotton-seeds-american-upland", "available": false }, { "featured_image": "files/agastache-arizona-sun-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_ec9e83ab-8abb-4477-8cfc-48e8f3999aa0.png", "price": 409, "handle": "agastache-arizona-sun-seeds", "title": "Agastache Seeds - Arizona Sun", "url": "/products/agastache-arizona-sun-seeds", "available": true }, { "featured_image": "files/chrysanthemum-seeds-broad-leaf-edible-Comp.jpg", "secondary_image": "products/edible-chrysanthemum-seeds-wm_700.jpg", "price": 299, "handle": "chrysanthemum-seeds-broad-leaf-edible", "title": "Chrysanthemum Seeds - Broad Leaf, Edible", "url": "/products/chrysanthemum-seeds-broad-leaf-edible", "available": true }, { "featured_image": "files/Sunflower_Midnight_Rouge_Comp.jpg", "secondary_image": "files/1663945854_Smallest-Size-MVS-Flowers-Generic-wb-wm-comp-600-600_1_34a2344f-78d1-4e81-aa65-c30dfe888a7e.jpg", "price": 419, "handle": "sunflower-seeds-midnight-rouge", "title": "Sunflower Seeds - Midnight Rouge", "url": "/products/sunflower-seeds-midnight-rouge", "available": false }, { "featured_image": "files/heliopsis-summer-sun-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-4-oz-sm_a6ff9a03-5b8b-47fc-b83e-0f70033d2e18.png", "price": 299, "handle": "heliopsis-summer-sun-flower-seeds", "title": "Heliopsis Seeds - Summer Sun", "url": "/products/heliopsis-summer-sun-flower-seeds", "available": true }, { "featured_image": "files/pepper-seeds-sweet-spicy-mix-Comp.jpg", "secondary_image": "", "price": 369, "handle": "pepper-seeds-sweet-spicy-mix", "title": "Pepper Seeds - Sweet & Spicy Mix", "url": "/products/pepper-seeds-sweet-spicy-mix", "available": true }, { "featured_image": "files/salvia-evolution-violet-blue-flower-seed-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_9f267f88-4701-462e-807d-44aafd5467cb.jpg", "price": 399, "handle": "salvia-evolution-violet-blue-flower-seed", "title": "Salvia Seeds - Evolution Violet", "url": "/products/salvia-evolution-violet-blue-flower-seed", "available": true }, { "featured_image": "files/mimosa-sensitive-plant-seeds-Comp.jpg", "secondary_image": "files/Mimosa_Plant_Seeds_-_GMO_Free_f78bf510-e961-43c8-852a-4c0201e2dab2.jpg", "price": 299, "handle": "mimosa-sensitive-plant-seeds", "title": "Mimosa Seeds - Sensitive Plant", "url": "/products/mimosa-sensitive-plant-seeds", "available": true }, { "featured_image": "files/dusty-miller-silverdust-pelleted-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_d6da9832-0915-4094-84c3-e049af1268ec.png", "price": 1190, "handle": "dusty-miller-silverdust-pelleted-flower-seeds", "title": "Dusty Miller Seeds - Silverdust", "url": "/products/dusty-miller-silverdust-pelleted-flower-seeds", "available": true }, { "featured_image": "files/aster-seeds-benarys-trimix-Comp.jpg", "secondary_image": "", "price": 299, "handle": "aster-seeds-benarys-trimix", "title": "Aster Seeds - Benarys Trimix", "url": "/products/aster-seeds-benarys-trimix", "available": true }, { "featured_image": "files/bachelor-buttons-seeds-jubilee-organic-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_acf0687e-6fc2-4fca-93b1-b6ced14ff31e.jpg", "price": 359, "handle": "bachelor-buttons-seeds-jubilee-organic", "title": "Bachelor Buttons Seeds - Jubilee - Organic", "url": "/products/bachelor-buttons-seeds-jubilee-organic", "available": false }, { "featured_image": "files/rudbeckia-indian-summer-flower-seed-comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_4d8241c2-2583-42d6-95f9-ebebca785bc9.jpg", "price": 339, "handle": "rudbeckia-indian-summer-flower-seed", "title": "Rudbeckia Seeds - Indian Summer (Coated)", "url": "/products/rudbeckia-indian-summer-flower-seed", "available": true }, { "featured_image": "files/yu-choy-sum-seeds-late-green-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_1e4066b4-44fe-452c-a6bd-4069596ff8d1.png", "price": 399, "handle": "yu-choy-sum-seeds-late-green", "title": "Yu Choy Sum Seeds - Late Green", "url": "/products/yu-choy-sum-seeds-late-green", "available": false }, { "featured_image": "files/amaranth-seeds-love-lies-bleeding-amaranthus-caudatus-Comp.jpg", "secondary_image": "products/Seed_Packet_8edfb2da-44b4-4cba-939a-8993b65bb60a.jpg", "price": 299, "handle": "amaranth-seeds-love-lies-bleeding-amaranthus-caudatus", "title": "Amaranthus Seeds - Love Lies Bleeding", "url": "/products/amaranth-seeds-love-lies-bleeding-amaranthus-caudatus", "available": false }, { "featured_image": "products/beneficial-insect-mix-com-wm.jpg", "secondary_image": "files/Flower_1lb_f206976d-cb3a-46c2-9dbd-1d97db0824ce.jpg", "price": 299, "handle": "flower-seed-wildflower-mixes-beneficial-insect-mix", "title": "Groundcover - Grass and Flower Pollinator Field Mix", "url": "/products/flower-seed-wildflower-mixes-beneficial-insect-mix", "available": false }, { "featured_image": "files/mexican-hat-seeds-Comp.jpg", "secondary_image": "products/Seed_Packet_1_1_a21e4311-6c16-4595-a101-885d6c797e58.jpg", "price": 299, "handle": "mexican-hat-seeds", "title": "Ratibida Seeds - Mexican Hat", "url": "/products/mexican-hat-seeds", "available": true }, { "featured_image": "files/eastern-pollinator-flower-mix-Comp.jpg", "secondary_image": "products/SSC-generic-packet_1_1_1_5147ee44-72a2-4bc5-a6e9-99b00110a8ba.jpg", "price": 369, "handle": "eastern-pollinator-flower-mix", "title": "Wildflower Seeds - Eastern Pollinator Mix", "url": "/products/eastern-pollinator-flower-mix", "available": true }, { "featured_image": "products/zinnia-magellan-orange-flower-wm_700.jpg", "secondary_image": "files/MVS_1_lb.jpg", "price": 199, "handle": "zinnia-seeds-magellan-series-orange", "title": "Zinnia Seeds - Magellan Series - Orange", "url": "/products/zinnia-seeds-magellan-series-orange", "available": true }, { "featured_image": "files/thunbergia-alata-mix-flower-seed-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_f10c6f3b-1fce-4daf-b999-e0e3ad3f287b.jpg", "price": 299, "handle": "thunbergia-alata-mix-flower-seed", "title": "Thunbergia Seeds - Alata Mix", "url": "/products/thunbergia-alata-mix-flower-seed", "available": true }, { "featured_image": "files/Celosia-Crested-Prestige-Scarlet-Comp.jpg", "secondary_image": "files/celosia-crested-prestige-scarlet-flower-seeds-comp.jpg", "price": 389, "handle": "celosia-crested-prestige-scarlet-flower-seeds", "title": "Celosia Seeds - Crested - Prestige Scarlet", "url": "/products/celosia-crested-prestige-scarlet-flower-seeds", "available": true }, { "featured_image": "files/celosia-plumed-new-look-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_e619c10a-7754-4abe-961e-d2be86959c2a.png", "price": 399, "handle": "celosia-plumed-new-look-flower-seeds", "title": "Celosia Seeds - Plumed - New Look (Pelleted)", "url": "/products/celosia-plumed-new-look-flower-seeds", "available": true }, { "featured_image": "products/chrysanthemum-snowland-seed-wm_700.jpg", "secondary_image": "products/non-gmo-sprouting-seed_02765aef-2c42-4567-9514-155e8be47944.jpg", "price": 519, "handle": "chrysanthemum-snowland-flower-seeds", "title": "Chrysanthemum Seeds - Snowland", "url": "/products/chrysanthemum-snowland-flower-seeds", "available": true }, { "featured_image": "files/nicotiana-perfume-deep-purple-flower-seeds-Comp.jpg", "secondary_image": "files/Flower_1lb_2516790c-eac1-4dc3-85a5-ade87b8a6d90.jpg", "price": 439, "handle": "nicotiana-perfume-deep-purple-flower-seeds", "title": "Nicotiana Seeds - Perfume Deep Purple (Pelleted)", "url": "/products/nicotiana-perfume-deep-purple-flower-seeds", "available": false }, { "featured_image": "files/dahlberg-daisy-golden-fleece-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-sm_728cdc00-d891-4906-b2b2-a8a4620d013e.png", "price": 329, "handle": "dahlberg-daisy-golden-fleece-flower-seeds", "title": "Dahlberg Daisy Seeds - Golden Fleece", "url": "/products/dahlberg-daisy-golden-fleece-flower-seeds", "available": true }, { "featured_image": "files/myosotis-forget-me-not-compindi-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_3295bdd0-31dd-4cbf-b493-7b0a6b6ca420.jpg", "price": 339, "handle": "myosotis-forget-me-not-compindi-flower-seeds", "title": "Myosotis Compindi (Forget-Me-Not) Seeds", "url": "/products/myosotis-forget-me-not-compindi-flower-seeds", "available": true } ]