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
2354 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" }
Amaranth Seeds - Green Leaf - Lu Hsienmid size pouch type seed packaging for - Amaranth Green Leaf Lu Hsien
-0
Heirloom
Amaranth Seeds - Green Leaf - Lu Hsien
Starting at $3.99
Mustard Seeds - Spinach (Komatsuna) - Tendergreen
-0
Heirloom
Mustard Seeds - Spinach (Komatsuna) - Tendergreen
Starting at $3.99
Tomato Seeds - Paste - Super Italian Pastemid size pouch type seed packaging for - Tomato Paste Super Italian Paste
-0
Heirloom
Tomato Seeds - Paste - Super Italian Paste
Starting at $2.99
Squash Winter Sweet DumplingSquash Winter Sweet Dumpling
-0
Heirloom
Squash Seeds - Winter - Sweet Dumpling
Starting at $3.39
Pepper Seeds - Sweet - Chinese Giant (Organic)mid size pouch type seed packaging for - Pepper Sweet Chinese Giant Organic
-0
Heirloom
Organic
Pepper Seeds - Sweet - Chinese Giant (Organic)
Starting at $3.79
Pepper Seeds - Hot - Anaheim Chili (Organic)small size packet type seed packaging for - Pepper Hot Anaheim Chili Organic
-0
Heirloom
Organic
Pepper Seeds - Hot - Anaheim Chili (Organic)
Starting at $3.59
Pea Seeds - Snow - Dwarf Sugar Greymid size pouch type seed packaging for - Pea Snow Dwarf Sugar Grey
-0
Heirloom
Pea Seeds - Snow - Dwarf Sugar Grey
Starting at $3.09
Squash Seeds - Summer - Zucchini Elite Hybridmid size pouch type seed packaging for - Squash Summer Zucchini Elite Hybrid
-0
Squash Seeds - Summer - Zucchini Elite Hybrid
Starting at $4.79
Corn Seeds - Sweet - Country Gentlemansmall size packet type seed packaging for - Corn Sweet Country Gentleman
-0
Heirloom
Corn Seeds - Sweet - Country Gentleman
Starting at $3.07
Cabbage Seeds - Danish Ballheadmid size pouch type seed packaging for - Cabbage Danish Ballhead
-0
Heirloom
Cabbage Seeds - Danish Ballhead
Starting at $2.99
Yu Choy Sum Seeds - Jung Greenmid size pouch type seed packaging for - Yu Choy Sum Jung Green
-0
Heirloom
Yu Choy Sum Seeds - Jung Green
Starting at $3.99
Mustard Seeds - Florida Broadleafmid size pouch type seed packaging for - Mustard Florida Broadleaf
-0
Mustard Seeds - Florida Broadleaf
Starting at $2.99
Squash Seeds - Summer - Fordhook Zucchinismall size packet type seed packaging for - Squash Summer Fordhook Zucchini
-28%
AAS Winner
Heirloom
Squash Seeds - Summer - Fordhook Zucchini
Starting at $1.99
Pea Seeds - Early Frostymid size pouch type seed packaging for - Pea Early Frosty
-0
Heirloom
Pea Seeds - Early Frosty
Starting at $3.29
Bean Seeds - Bush - Garbanzo (Organic)Bean Seeds - Bush - Garbanzo (Organic)
-0
Heirloom
Organic
Bean Seeds - Bush - Garbanzo (Organic)
Starting at $5.17
Cucumber Seeds - English Telegraphsmall size packet type seed packaging for - Cucumber English Telegraph
-0
Heirloom
Cucumber Seeds - English Telegraph
Starting at $3.89
Onion Seeds - Short - Texas Grano 502 (Organic)
-0
Heirloom
Organic
Onion Seeds - Short - Texas Grano 502 (Organic)
Starting at $3.59
Tomato Seeds - Slicing - Chefs Choice Orange Hybridsmall size packet type seed packaging for - Tomato Slicing Chefs Choice Orange Hybrid
-0
AAS Winner
Tomato Seeds - Slicing - Chefs Choice Orange Hybrid
Starting at $5.39
Cucumber Seeds - China Long - Hybridmid size pouch type seed packaging for - Cucumber China Long Hybrid
-0
Cucumber Seeds - China Long - Hybrid
Starting at $3.99
Pepper Seeds - Sweet - Mini Belle Mixsmall size packet type seed packaging for - Pepper Sweet Mini Belle Mix
-0
Pepper Seeds - Sweet - Mini Belle Mix
Starting at $2.99
Pepper Seeds - Sweet - Shishito (Organic)Pepper Seeds - Sweet - Shishito (Organic)
-0
Heirloom
Organic
Pepper Seeds - Sweet - Shishito (Organic)
Starting at $3.99
Watermelon Seeds - Mini - Golden Midgetsmall size packet type seed packaging for - Watermelon Mini Golden Midget
-0
Heirloom
Watermelon Seeds - Mini - Golden Midget
Starting at $3.59
Pepper Seeds - Sweet - Orange King Bellsmall size packet type seed packaging for - Pepper Sweet Orange King Bell
-0
Heirloom
Pepper Seeds - Sweet - Orange King Bell
Starting at $3.59
Carrot Seeds - Red Cored Chantenay - Organicsmall size packet type seed packaging for - Carrot Red Cored Chantenay Organic
-0
Heirloom
Organic
Carrot Seeds - Red Cored Chantenay - Organic
Starting at $3.59
Corn Seeds - Dent - Hickory King Whitesmall size packet type seed packaging for - Corn Dent Hickory King White
-0
Heirloom
Corn Seeds - Dent - Hickory King White
Starting at $2.63
Pepper Seeds - Sweet - Big Bertha HybridPepper Seeds - Sweet - Big Bertha Hybrid
-0
Pepper Seeds - Sweet - Big Bertha Hybrid
Starting at $4.59
Chard Seeds - Perpetual Spinachsmall size packet type seed packaging for - Chard Perpetual Spinach
-0
Heirloom
Chard Seeds - Perpetual Spinach
Starting at $2.99
Cucumber Seeds - Marketmore 80mid size pouch type seed packaging for - Zinnia Magellan Series Orange
-28%
Heirloom
Cucumber Seeds - Marketmore 80
Starting at $1.99
Onion Seeds - Long - Southport Red Globe
Starting at $2.99
Lettuce Seeds, Romaine - Little Caesar - Organic
Starting at $3.59
Watermelon Seeds - Picnic - Sangria Hybrid
Starting at $5.89
Tomato Seeds - Slicing - Vintage Wine
Starting at $2.99
[ { "featured_image": "files/amaranth-seeds-green-leaf-lu-hsien-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_16dce5fd-b65d-4982-9289-03f7502eb536.png", "price": 399, "handle": "amaranth-seeds-green-leaf-lu-hsien", "title": "Amaranth Seeds - Green Leaf - Lu Hsien", "url": "/products/amaranth-seeds-green-leaf-lu-hsien", "available": true }, { "featured_image": "files/mustard-spinach-komatsuna-tendergreen-seeds-comp.jpg", "secondary_image": "", "price": 399, "handle": "mustard-spinach-komatsuna-tendergreen-seeds", "title": "Mustard Seeds - Spinach (Komatsuna) - Tendergreen", "url": "/products/mustard-spinach-komatsuna-tendergreen-seeds", "available": true }, { "featured_image": "files/tomato-seeds-super-italian-paste-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-lb-com_d613e299-852b-4813-bb24-aa726564159d.jpg", "price": 299, "handle": "tomato-seeds-super-italian-paste", "title": "Tomato Seeds - Paste - Super Italian Paste", "url": "/products/tomato-seeds-super-italian-paste", "available": true }, { "featured_image": "files/Squash_Winter_Sweet_Dumpling_Group_Comp.jpg", "secondary_image": "files/Squash_Winter_Sweet_Dumpling_Comp.jpg", "price": 339, "handle": "squash-winter-sweet-dumpling-seeds", "title": "Squash Seeds - Winter - Sweet Dumpling", "url": "/products/squash-winter-sweet-dumpling-seeds", "available": true }, { "featured_image": "files/organic-chinese-giant-pepper-seeds-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_1_1_2_ac9ce9c4-2708-44ff-9893-881c1fa30417.jpg", "price": 379, "handle": "organic-chinese-giant-pepper-seeds", "title": "Pepper Seeds - Sweet - Chinese Giant (Organic)", "url": "/products/organic-chinese-giant-pepper-seeds", "available": true }, { "featured_image": "files/organic-anaheim-chili-pepper-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_703c7bb6-dcb9-4008-a1b3-40f2acc03243.jpg", "price": 359, "handle": "organic-anaheim-chili-pepper", "title": "Pepper Seeds - Hot - Anaheim Chili (Organic)", "url": "/products/organic-anaheim-chili-pepper", "available": true }, { "featured_image": "files/pea-snow-dwarf-sugar-grey-comp.jpg", "secondary_image": "products/SeedPouch_7b7d282b-30a4-40a9-a86a-b339860799a3.jpg", "price": 309, "handle": "pea-snow-dwarf-sugar-grey", "title": "Pea Seeds - Snow - Dwarf Sugar Grey", "url": "/products/pea-snow-dwarf-sugar-grey", "available": true }, { "featured_image": "files/zucchini-elite-hybrid-plant-seed-wm_700_1222x1222_0795b76d-0ca9-4e8c-a859-2c92884f2355.jpg", "secondary_image": "products/SeedPouch_78667d94-8ff9-4096-ae0a-ee67206388b8.jpg", "price": 479, "handle": "squash-summer-zucchini-elite-hybrid-seeds", "title": "Squash Seeds - Summer - Zucchini Elite Hybrid", "url": "/products/squash-summer-zucchini-elite-hybrid-seeds", "available": true }, { "featured_image": "files/country-gentleman-corn-seed-comp.jpg", "secondary_image": "products/SSC-generic-packet_1_a02021b6-f834-4605-ba3f-cc88aaba6b30_1_2.jpg", "price": 307, "handle": "country-gentleman-corn-seed", "title": "Corn Seeds - Sweet - Country Gentleman", "url": "/products/country-gentleman-corn-seed", "available": true }, { "featured_image": "files/cabbage-danish-ballhead-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-sm_29486bcc-c642-4e3f-89f6-a5e50265fd38.png", "price": 299, "handle": "cabbage-danish-ballhead", "title": "Cabbage Seeds - Danish Ballhead", "url": "/products/cabbage-danish-ballhead", "available": true }, { "featured_image": "files/yu-choy-sum-seeds-jung-green-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_7ac425c8-91bc-45b1-97f4-a61673283b42.png", "price": 399, "handle": "yu-choy-sum-seeds-jung-green", "title": "Yu Choy Sum Seeds - Jung Green", "url": "/products/yu-choy-sum-seeds-jung-green", "available": true }, { "featured_image": "files/onion-southport-red-globe-seed-wm_700_1222x1222_4f29b5b9-3b5f-4b79-b575-4e32c71cab4c.jpg", "secondary_image": "products/non-gmo-sprouting-seed_da1637b6-6708-4501-baac-a6decf2c3351.jpg", "price": 299, "handle": "onion-southport-red-globe-seeds", "title": "Onion Seeds - Long - Southport Red Globe", "url": "/products/onion-southport-red-globe-seeds", "available": false }, { "featured_image": "files/mustard-florida-broadleaf-seeds-comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_18607811-ba1c-4604-82d2-cfcb673302e9.jpg", "price": 299, "handle": "mustard-florida-broadleaf-seeds", "title": "Mustard Seeds - Florida Broadleaf", "url": "/products/mustard-florida-broadleaf-seeds", "available": true }, { "featured_image": "products/sqaush-summer-fordhook-zuchinni-conventional-l-com-wm.jpg", "secondary_image": "products/MVS-generic-packet-com_a3690b8e-108a-4e8d-b521-7a708e315f89.jpg", "price": 199, "handle": "squash-seeds-summer-fordhook-zucchini", "title": "Squash Seeds - Summer - Fordhook Zucchini", "url": "/products/squash-seeds-summer-fordhook-zucchini", "available": true }, { "featured_image": "files/pea-early-frosty-comp.jpg", "secondary_image": "products/SeedPouch_ba8eb95d-9e8b-4798-b1cd-aca9c27e00e7.jpg", "price": 329, "handle": "pea-early-frosty", "title": "Pea Seeds - Early Frosty", "url": "/products/pea-early-frosty", "available": true }, { "featured_image": "files/garbanzo-bean-seeds-organic-comp.jpg", "secondary_image": "products/seeds-organic-garbanzo-sprouting-seeds-macro-shot-of-garbanzo-sprouting-seed-com-wm.jpg", "price": 517, "handle": "garbanzo-bean-seeds-organic", "title": "Bean Seeds - Bush - Garbanzo (Organic)", "url": "/products/garbanzo-bean-seeds-organic", "available": true }, { "featured_image": "files/english-telegraph-cucumber-seed-Comp.jpg", "secondary_image": "products/Seed_Packet_6a0bca40-94a2-4b04-b991-d0b57d456612.jpg", "price": 389, "handle": "english-telegraph-cucumber-seed", "title": "Cucumber Seeds - English Telegraph", "url": "/products/english-telegraph-cucumber-seed", "available": true }, { "featured_image": "files/onion-seeds-texas-grano-502-organic-Comp.jpg", "secondary_image": "", "price": 359, "handle": "onion-seeds-texas-grano-502-organic", "title": "Onion Seeds - Short - Texas Grano 502 (Organic)", "url": "/products/onion-seeds-texas-grano-502-organic", "available": true }, { "featured_image": "files/chefs-choice-orange-hybrid-f1-tomato-Comp.jpg", "secondary_image": "products/Seed_Packet_4809151c-d9b0-4ca7-94e5-982402dc7714.jpg", "price": 539, "handle": "chefs-choice-orange-hybrid-f1-tomato", "title": "Tomato Seeds - Slicing - Chefs Choice Orange Hybrid", "url": "/products/chefs-choice-orange-hybrid-f1-tomato", "available": true }, { "featured_image": "files/China_Long_Cucumber_Comp_3fd891de-1dca-4f2e-a5ec-1764b7aa0390.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_4f9aa9cd-a17e-431e-96e7-b221f7737e3a.png", "price": 399, "handle": "cucumber-seeds-china-long-hybrid", "title": "Cucumber Seeds - China Long - Hybrid", "url": "/products/cucumber-seeds-china-long-hybrid", "available": true }, { "featured_image": "products/pepper-sweet-mini-belle-mix-conventional-l-com-wm.jpg", "secondary_image": "products/MVS-generic-packet-com_997c02a7-8199-4aa2-8f07-89c5e567dbdb.jpg", "price": 299, "handle": "pepper-seeds-sweet-mini-belle-mix", "title": "Pepper Seeds - Sweet - Mini Belle Mix", "url": "/products/pepper-seeds-sweet-mini-belle-mix", "available": true }, { "featured_image": "files/pepper-seeds-hot-shishito-organic-comp.jpg", "secondary_image": "files/Pepper-Hot-Shishito-Organic-In-Hands_61e1cbff-d746-4ee6-baee-1b292364418c.jpg", "price": 399, "handle": "pepper-seeds-hot-shishito-organic", "title": "Pepper Seeds - Sweet - Shishito (Organic)", "url": "/products/pepper-seeds-hot-shishito-organic", "available": true }, { "featured_image": "files/lettuce-seeds-romaine-little-caesar-organic-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_26057201-0d19-4711-a009-df9b30712ac0.jpg", "price": 359, "handle": "lettuce-seeds-romaine-little-caesar-organic", "title": "Lettuce Seeds, Romaine - Little Caesar - Organic", "url": "/products/lettuce-seeds-romaine-little-caesar-organic", "available": false }, { "featured_image": "files/watermelon-golden-midget-com-wm_1222x1222_32520d05-63c8-4ae1-a13e-fec6667042a4.jpg", "secondary_image": "products/Seed_Packet_84b28605-f2ef-4a05-9077-1498b1a1781b.jpg", "price": 359, "handle": "golden-midget-watermelon-seeds", "title": "Watermelon Seeds - Mini - Golden Midget", "url": "/products/golden-midget-watermelon-seeds", "available": true }, { "featured_image": "files/orange-king-bell-pepper-comp.jpg", "secondary_image": "products/Seed_Packet_1_2c5f7142-a028-4b7f-9e3e-d5f3a0bceb25.jpg", "price": 359, "handle": "orange-king-bell-pepper", "title": "Pepper Seeds - Sweet - Orange King Bell", "url": "/products/orange-king-bell-pepper", "available": true }, { "featured_image": "files/Watermelon-Seeds-Picnic-Sangria-Hybrid-comp.jpg", "secondary_image": "products/Seed_Pouch_1_1_1_90413272-c6dc-4ff1-a31c-74a698a2af16.jpg", "price": 589, "handle": "watermelon-sangria-hybrid-seeds", "title": "Watermelon Seeds - Picnic - Sangria Hybrid", "url": "/products/watermelon-sangria-hybrid-seeds", "available": false }, { "featured_image": "files/organic-red-cored-chantenay-carrot-seed-comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_7cd28e46-152a-4b16-81d0-cb8fbef22707.jpg", "price": 359, "handle": "organic-red-cored-chantenay-carrot-seed", "title": "Carrot Seeds - Red Cored Chantenay - Organic", "url": "/products/organic-red-cored-chantenay-carrot-seed", "available": true }, { "featured_image": "files/vintage-wine-tomato-Comp.jpg", "secondary_image": "products/Seed_Packet_d613c1d0-44dd-47ef-a049-aec707123222.jpg", "price": 299, "handle": "vintage-wine-tomato", "title": "Tomato Seeds - Slicing - Vintage Wine", "url": "/products/vintage-wine-tomato", "available": false }, { "featured_image": "files/Corn-Seeds-Dent-Hickory-King-White-comp.jpg", "secondary_image": "products/Seed_Packet_33bd2e66-4c19-40be-b38b-e78e93b7a139_1.jpg", "price": 263, "handle": "hickory-king-white-corn-seeds", "title": "Corn Seeds - Dent - Hickory King White", "url": "/products/hickory-king-white-corn-seeds", "available": true }, { "featured_image": "files/pepper-sweet-big-bertha-hybrid-seeds-comp.jpg", "secondary_image": "products/Seed_Pouch_1_b9bf0dff-5b1b-473d-adb4-f3d716ca3100.jpg", "price": 459, "handle": "pepper-sweet-big-bertha-hybrid-seeds", "title": "Pepper Seeds - Sweet - Big Bertha Hybrid", "url": "/products/pepper-sweet-big-bertha-hybrid-seeds", "available": true }, { "featured_image": "files/chard-perpetual-spinach-com-wm_1222x1222_09512174-f478-4214-9106-c9635937b665.jpg", "secondary_image": "products/Seed_Packet_f14f776b-6687-4dd9-9ce1-85347e6102ef.jpg", "price": 299, "handle": "perpetual-spinach-chard", "title": "Chard Seeds - Perpetual Spinach", "url": "/products/perpetual-spinach-chard", "available": true }, { "featured_image": "files/marketmore-80-cucumber-seeds-comp.jpg", "secondary_image": "files/MVS_1_lb.jpg", "price": 199, "handle": "marketmore-80-cucumber-seeds", "title": "Cucumber Seeds - Marketmore 80", "url": "/products/marketmore-80-cucumber-seeds", "available": true } ]