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
2460 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" }
Pepper Seeds - Hot - Cayenne Long Red Thin (Organic)small size packet type seed packaging for - Pepper Hot Cayenne Long Red Thin Organic
-0
Heirloom
Organic
Pepper Seeds - Hot - Cayenne Long Red Thin (Organic)
Starting at $3.59
Melon Seeds - Canary Yellowmid size pouch type seed packaging for - Melon Canary Yellow
-0
Heirloom
Melon Seeds - Canary Yellow
Starting at $2.99
Pea Seeds - Snap - Sugar Sprintmid size pouch type seed packaging for - Pea Snap Sugar Sprint
-0
Heirloom
Pea Seeds - Snap - Sugar Sprint
Starting at $3.39
Bean Seeds - Bush - Dark Red Kidney (Organic)mid size pouch type seed packaging for - Bean Bush Dark Red Kidney Organic
-0
Heirloom
Organic
Bean Seeds - Bush - Dark Red Kidney (Organic)
Starting at $3.59
Pumpkin Seeds - Cinderellamid size pouch type seed packaging for - Pumpkin Cinderella
-47%
Heirloom
Pumpkin Seeds - Cinderella
Starting at $1.99
Bean Seeds - Pole - Kentucky Wonder (Organic)mid size pouch type seed packaging for - Bean Pole Kentucky Wonder Organic
-0
Heirloom
Organic
Bean Seeds - Pole - Kentucky Wonder (Organic)
Starting at $4.20
Zinnia Seeds - Profusion Series (Coated)Zinnia Seeds - Profusion Series (Coated)
-0
AAS Winner
Zinnia Seeds - Profusion Series (Coated)
Starting at $3.59
Pepper Seeds - Sweet - Marconi Redsmall size packet type seed packaging for - Pepper Sweet Marconi Red
-0
Heirloom
Pepper Seeds - Sweet - Marconi Red
Starting at $2.99
Rudbeckia Seeds - Black-Eyed Susanmid size pouch type seed packaging for - Rudbeckia Black-Eyed Susan
-0
Rudbeckia Seeds - Black-Eyed Susan
Starting at $2.99
Tomato Seeds - Slicing - Beefmaster HybridTomato Seeds - Slicing - Beefmaster Hybrid
-0
Tomato Seeds - Slicing - Beefmaster Hybrid
Starting at $4.79
Tomato Seeds - Slicing - Mortgage Liftermid size pouch type seed packaging for - Zinnia Magellan Series Orange
-0
Heirloom
Tomato Seeds - Slicing - Mortgage Lifter
Starting at $3.39
Asclepias Seeds - Butterfly Milkweedmid size pouch type seed packaging for - Asclepias Butterfly Milkweed
-11%
Asclepias Seeds - Butterfly Milkweed
Starting at $3.19
Mustard - Farmer's Favorite Cover Crop Mixmid size pouch type seed packaging for - Zinnia Magellan Series Orange
-0
Mustard - Farmer's Favorite Cover Crop Mix
Starting at $5.69
Hairy Vetch - Cover Crop SeedsHairy Vetch - Cover Crop Seeds
-0
Hairy Vetch - Cover Crop Seeds
Starting at $3.59
Squash Seeds - Honeynutmid size pouch type seed packaging for - Squash Honeynut
-0
Squash Seeds - Honeynut
Starting at $4.39
Radicchio Seeds - Palla Rosamid size pouch type seed packaging for - Radicchio Palla Rosa
-0
Heirloom
Radicchio Seeds - Palla Rosa
Starting at $2.99
Tomato Seeds - Slicing - Lemon Boy Hybridmid size pouch type seed packaging for - Tomato Slicing Lemon Boy Hybrid
-0
AAS Winner
Tomato Seeds - Slicing - Lemon Boy Hybrid
Starting at $4.09
Pepper Seeds - Hot - Large Red Cherry Hotmid size pouch type seed packaging for - Pepper Hot Large Red Cherry Hot
-0
Heirloom
Pepper Seeds - Hot - Large Red Cherry Hot
Starting at $3.29
Carrot Seeds - Chantenay Red Coremid size pouch type seed packaging for - Carrot Chantenay Red Core
-0
Heirloom
Carrot Seeds - Chantenay Red Core
Starting at $2.99
Pea Seeds - Snap - Sugar Daddymid size pouch type seed packaging for - Pea Snap Sugar Daddy
-0
Heirloom
Pea Seeds - Snap - Sugar Daddy
Starting at $3.29
Cabbage Seeds - All Seasons Cabbagesmall size packet type seed packaging for - Cabbage All Seasons Cabbage
-0
Heirloom
Cabbage Seeds - All Seasons Cabbage
Starting at $2.79
Beet Seeds - Chioggia (Organic)small size packet type seed packaging for - Beet Chioggia Organic
-0
Heirloom
Organic
Beet Seeds - Chioggia (Organic)
Starting at $3.59
Pepper - Hot - Cayenne Thickmid size pouch type seed packaging for - Pepper Hot Cayenne Thick
-0
Heirloom
Pepper - Hot - Cayenne Thick
Starting at $2.99
Cucumber Seeds - Long Green Imp. Slicingsmall size packet type seed packaging for - Cucumber Long Green Imp Slicing
-0
Heirloom
Cucumber Seeds - Long Green Imp. Slicing
Starting at $2.99
Watermelon Seeds - Giant - Black Diamondsmall size packet type seed packaging for - Watermelon Giant Black Diamond
-0
Heirloom
Watermelon Seeds - Giant - Black Diamond
Starting at $2.99
Swiss Chard Seeds - Fordhook Giantmid size pouch type seed packaging for - Swiss Chard Fordhook Giant
-0
Heirloom
Swiss Chard Seeds - Fordhook Giant
Starting at $2.99
Tomato Seeds - Slicing - Beefsteak Determinatesmall size packet type seed packaging for - Tomato Slicing Beefsteak Determinate
-0
Tomato Seeds - Slicing - Beefsteak Determinate
Starting at $2.99
Broccoli Raab Spring Raab RapiniBroccoli Raab Spring Rapini
-0
Heirloom
Broccoli Raab Seeds - Spring Rapini
Starting at $2.99
Melon Seeds - Crenshaw - CrenshawMelon Seeds - Crenshaw - Crenshaw
-0
Heirloom
Melon Seeds - Crenshaw - Crenshaw
Starting at $2.99
Zinnia Seeds - Magellan Series (Coated)Zinnia Seeds - Magellan Series (Coated)
-0
AAS Winner
Zinnia Seeds - Magellan Series (Coated)
Starting at $1.99
Pea Seeds - Shelling - Green Arrowmid size pouch type seed packaging for - Pea Shelling Green Arrow
-0
Heirloom
Pea Seeds - Shelling - Green Arrow
Starting at $3.39
Snapdragon Seeds - Rocket SeriesSnapdragon Seeds - Rocket Series
-0
Snapdragon Seeds - Rocket Series
Starting at $3.29
[ { "featured_image": "files/pepper-seeds-hot-cayenne-long-red-thin-organic-comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_1c8d39f7-4626-45f7-9d41-5397f18e414d.jpg", "price": 359, "handle": "pepper-seeds-hot-cayenne-long-red-thin-organic", "title": "Pepper Seeds - Hot - Cayenne Long Red Thin (Organic)", "url": "/products/pepper-seeds-hot-cayenne-long-red-thin-organic", "available": true }, { "featured_image": "files/melon-canary-yellow-seeds-comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_d4f89c83-54d5-4813-ad65-19f47ba95cf5.jpg", "price": 299, "handle": "melon-canary-yellow-seeds", "title": "Melon Seeds - Canary Yellow", "url": "/products/melon-canary-yellow-seeds", "available": true }, { "featured_image": "files/Pea-Snap-Sugar-Sprint-Comp.jpg", "secondary_image": "products/SeedPouch_85a244db-d877-45ec-850f-1f5aa7ecbfbd.jpg", "price": 339, "handle": "pea-snap-sugar-sprint", "title": "Pea Seeds - Snap - Sugar Sprint", "url": "/products/pea-snap-sugar-sprint", "available": true }, { "featured_image": "files/organic-dark-red-kidney-beans-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_1_1_2_9d94c0f0-5372-4783-81fd-1bdef8e3d4a9.jpg", "price": 359, "handle": "organic-dark-red-kidney-beans", "title": "Bean Seeds - Bush - Dark Red Kidney (Organic)", "url": "/products/organic-dark-red-kidney-beans", "available": true }, { "featured_image": "files/pumpkin-cinderella-rouge-vif-d-estampes-Comp.jpg", "secondary_image": "products/SeedPouch_fd10abec-d6e2-4659-bed8-0d0a8cc53b66.jpg", "price": 199, "handle": "pumpkin-cinderella-rouge-vif-d-estampes", "title": "Pumpkin Seeds - Cinderella", "url": "/products/pumpkin-cinderella-rouge-vif-d-estampes", "available": true }, { "featured_image": "files/organic-kentucky-wonder-pole-bean-seed-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-sm_cb189a94-9ca9-44d9-b103-fb230cae1187.png", "price": 420, "handle": "organic-kentucky-wonder-pole-bean-seed", "title": "Bean Seeds - Pole - Kentucky Wonder (Organic)", "url": "/products/organic-kentucky-wonder-pole-bean-seed", "available": true }, { "featured_image": "files/zinnia-profusion-series-flower-seed-comp.jpg", "secondary_image": "products/zinnia-profusion-series-double-cherry-flower-wm_700.jpg", "price": 359, "handle": "zinnia-profusion-series-flower-seed", "title": "Zinnia Seeds - Profusion Series (Coated)", "url": "/products/zinnia-profusion-series-flower-seed", "available": true }, { "featured_image": "files/marconi-red-pepper-Comp.jpg", "secondary_image": "products/Seed_Packet_1_f23665cf-e168-42c0-8fc9-4600c223f1b4.jpg", "price": 299, "handle": "marconi-red-pepper", "title": "Pepper Seeds - Sweet - Marconi Red", "url": "/products/marconi-red-pepper", "available": true }, { "featured_image": "files/black-eyed-susan-flower-seeds-comp.jpg", "secondary_image": "products/SeedPouch_3dc3dcfa-00d6-4182-8019-b83d1291c7ea.jpg", "price": 299, "handle": "black-eyed-susan-flower-seeds", "title": "Rudbeckia Seeds - Black-Eyed Susan", "url": "/products/black-eyed-susan-flower-seeds", "available": true }, { "featured_image": "files/tomato-beefmaster-hybrid-seeds-comp.jpg", "secondary_image": "products/Seed_Pouch_1_1_e59448ba-d7cc-431b-a2d7-758acc938a29.jpg", "price": 479, "handle": "tomato-beefmaster-hybrid-seeds", "title": "Tomato Seeds - Slicing - Beefmaster Hybrid", "url": "/products/tomato-beefmaster-hybrid-seeds", "available": true }, { "featured_image": "files/mortgage-lifter-tomato-seed-wm_700_1222x1222_d387b43a-5ab1-4440-ad15-82cce5a84a54.jpg", "secondary_image": "files/MVS_1_lb.jpg", "price": 339, "handle": "tomato-mortgage-lifter-seeds", "title": "Tomato Seeds - Slicing - Mortgage Lifter", "url": "/products/tomato-mortgage-lifter-seeds", "available": true }, { "featured_image": "files/asclepias-butterfly-weed-flower-seeds-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_a0b137e4-2c10-47d7-a413-71a488ec80d7.png", "price": 319, "handle": "asclepias-butterfly-weed-flower-seeds", "title": "Asclepias Seeds - Butterfly Milkweed", "url": "/products/asclepias-butterfly-weed-flower-seeds", "available": true }, { "featured_image": "files/Mustard-Farmer_s-Favorite-Cover-Crop-Mix-Comp.jpg", "secondary_image": "files/MVS_1_lb.jpg", "price": 569, "handle": "mustard-farmers-favorite-cover-crop-mix", "title": "Mustard - Farmer's Favorite Cover Crop Mix", "url": "/products/mustard-farmers-favorite-cover-crop-mix", "available": true }, { "featured_image": "files/hairy-vetch-cover-crop-seeds-organic-comp.jpg", "secondary_image": "products/hairy-vetch-seed-wm_700.jpg", "price": 359, "handle": "hairy-vetch-seeds", "title": "Hairy Vetch - Cover Crop Seeds", "url": "/products/hairy-vetch-seeds", "available": true }, { "featured_image": "files/honeynut-squash-seeds-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-sus-wm-comp_1d897bca-ad1c-45d3-8e5b-8c5aabe43bdb.jpg", "price": 439, "handle": "honeynut-squash-seeds", "title": "Squash Seeds - Honeynut", "url": "/products/honeynut-squash-seeds", "available": true }, { "featured_image": "files/radicchio-palla-rosa-seeds-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_48ce947a-14d7-449c-9c8e-7f101296624a.jpg", "price": 299, "handle": "radicchio-palla-rosa-seeds", "title": "Radicchio Seeds - Palla Rosa", "url": "/products/radicchio-palla-rosa-seeds", "available": true }, { "featured_image": "files/tomato-lemon-boy-hybrid-seeds-Comp.jpg", "secondary_image": "products/SeedPouch_7da08319-0d6f-4f3d-afe7-2e0ff8457bdd.jpg", "price": 409, "handle": "tomato-lemon-boy-hybrid-seeds", "title": "Tomato Seeds - Slicing - Lemon Boy Hybrid", "url": "/products/tomato-lemon-boy-hybrid-seeds", "available": true }, { "featured_image": "files/pepper-hot-large-red-cherry-hot-seeds-comp.jpg", "secondary_image": "products/SeedPouch_9edef2b9-eaba-46c2-b517-795d476dcf71.jpg", "price": 329, "handle": "pepper-hot-large-red-cherry-hot-seeds", "title": "Pepper Seeds - Hot - Large Red Cherry Hot", "url": "/products/pepper-hot-large-red-cherry-hot-seeds", "available": true }, { "featured_image": "files/carrot-chantenay-red-core-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-sm_ab3cffde-de7b-4691-8817-9c5cf8c78d97.png", "price": 299, "handle": "carrot-chantenay-red-core", "title": "Carrot Seeds - Chantenay Red Core", "url": "/products/carrot-chantenay-red-core", "available": true }, { "featured_image": "products/pea-snap-sugar-daddy-seed-wm_700.jpg", "secondary_image": "products/SeedPouch_b7913525-32f8-4969-8de1-d5b5d8c6c95a.jpg", "price": 329, "handle": "pea-snap-sugar-daddy", "title": "Pea Seeds - Snap - Sugar Daddy", "url": "/products/pea-snap-sugar-daddy", "available": true }, { "featured_image": "files/all-seasons-cabbage-comp.jpg", "secondary_image": "products/Seed_Packet_5f8de5b0-284f-443c-b272-93b9eec31cd3.jpg", "price": 279, "handle": "all-seasons-cabbage", "title": "Cabbage Seeds - All Seasons Cabbage", "url": "/products/all-seasons-cabbage", "available": true }, { "featured_image": "files/beet-chioggia-organic-comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_53906f89-058b-4899-a3dc-f0b4934c067d.jpg", "price": 359, "handle": "beet-chioggia-organic", "title": "Beet Seeds - Chioggia (Organic)", "url": "/products/beet-chioggia-organic", "available": true }, { "featured_image": "files/pepper-hot-cayenne-thick-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-4-oz-sm_1.png", "price": 299, "handle": "pepper-hot-cayenne-thick", "title": "Pepper - Hot - Cayenne Thick", "url": "/products/pepper-hot-cayenne-thick", "available": true }, { "featured_image": "files/long-green-imp-slicing-cucumber-comp.jpg", "secondary_image": "products/Seed_Packet_62be3f32-2fda-4b44-920f-0cddc021bedd.jpg", "price": 299, "handle": "long-green-imp-slicing-cucumber", "title": "Cucumber Seeds - Long Green Imp. Slicing", "url": "/products/long-green-imp-slicing-cucumber", "available": true }, { "featured_image": "files/watermelon-seeds-black-diamond-comp.jpg", "secondary_image": "products/MVS-generic-packet_1_afd1b938-68b8-4030-8482-009d36b0aaf0.jpg", "price": 299, "handle": "watermelon-seeds-black-diamond", "title": "Watermelon Seeds - Giant - Black Diamond", "url": "/products/watermelon-seeds-black-diamond", "available": true }, { "featured_image": "files/swiss-chard-fordhook-giant-seeds-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_3bc852bd-26d4-444a-82d2-7744105a2281.jpg", "price": 299, "handle": "swiss-chard-fordhook-giant-seeds", "title": "Swiss Chard Seeds - Fordhook Giant", "url": "/products/swiss-chard-fordhook-giant-seeds", "available": true }, { "featured_image": "files/tomato-seeds-beefsteak-determinate-comp.jpg", "secondary_image": "products/MVS-generic-packet-com_89bfcd79-9678-4cfe-af1a-38dbc888f747.jpg", "price": 299, "handle": "tomato-seeds-beefsteak-determinate", "title": "Tomato Seeds - Slicing - Beefsteak Determinate", "url": "/products/tomato-seeds-beefsteak-determinate", "available": true }, { "featured_image": "files/Broccoli-Raab-Spring-Rapini-Comp.jpg", "secondary_image": "files/Broccoli_Raab_Spring_Rapini_Organic_1_Comp.jpg", "price": 299, "handle": "spring-raab-rapini-broccoli", "title": "Broccoli Raab Seeds - Spring Rapini", "url": "/products/spring-raab-rapini-broccoli", "available": true }, { "featured_image": "files/melon-crenshaw-crenshaw-seeds-Comp.jpg", "secondary_image": "products/Seed_Pouch_2.jpg", "price": 299, "handle": "melon-crenshaw-crenshaw-seeds", "title": "Melon Seeds - Crenshaw - Crenshaw", "url": "/products/melon-crenshaw-crenshaw-seeds", "available": true }, { "featured_image": "files/Zinnia-Seeds-Magellan-Series-comp.jpg", "secondary_image": "products/zinnia-magellan-ivory-flower-wm_700.jpg", "price": 199, "handle": "zinnia-magellan-series-flower-seed", "title": "Zinnia Seeds - Magellan Series (Coated)", "url": "/products/zinnia-magellan-series-flower-seed", "available": true }, { "featured_image": "files/pea-green-arrow-seed-wm_700_1222x1222_a5bedfaf-ec5e-459e-9f8c-838935383186.jpg", "secondary_image": "products/SeedPouch_0cfe8a60-7061-45a8-b08b-1034881ac1bb.jpg", "price": 339, "handle": "pea-green-arrow-seed", "title": "Pea Seeds - Shelling - Green Arrow", "url": "/products/pea-green-arrow-seed", "available": true }, { "featured_image": "files/snapdragon-rocket-series-flower-seed-comp.jpg", "secondary_image": "products/snapdragon-rocket-series-cherry-flowers-wm_700.jpg", "price": 329, "handle": "snapdragon-rocket-series-flower-seed", "title": "Snapdragon Seeds - Rocket Series", "url": "/products/snapdragon-rocket-series-flower-seed", "available": true } ]