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" }
Tomato Seeds - Slicing - Patio HybridTomato Seeds - Slicing - Patio Hybrid
-0
AAS Winner
Tomato Seeds - Slicing - Patio Hybrid
Starting at $3.99
Gourd Seeds - Buab Moom - Hybrid - Kitazawa Spring SALEmid size pouch type seed packaging for - Gourd Buab Moom Hybrid Kitazawa Spring SALE
-30%
Gourd Seeds - Buab Moom - Hybrid - Kitazawa Spring...
Starting at $2.79
Beet Seeds - Bulls Blood - Organicsmall size packet type seed packaging for - Beet Bulls Blood Organic
-0
Heirloom
Beet Seeds - Bulls Blood - Organic
Starting at $3.59
Pepper Seeds - Hot - Caribbean Blendsmall size packet type seed packaging for - Pepper Hot Caribbean Blend
-0
Pepper Seeds - Hot - Caribbean Blend
Starting at $2.99
Tomato Seeds - Slicing - Brandywine Red Regular Leafmid size pouch type seed packaging for - Tomato Slicing Brandywine Red Regular Leaf
-0
Heirloom
Tomato Seeds - Slicing - Brandywine Red Regular Leaf
Starting at $2.99
Watermelon Seeds - Picnic - All Sweetsmall size packet type seed packaging for - Watermelon Picnic All Sweet
-0
Heirloom
Watermelon Seeds - Picnic - All Sweet
Starting at $3.29
Bean Seeds - Bush - Tendergreensmall size packet type seed packaging for - Bean Bush Tendergreen
-0
Heirloom
Bean Seeds - Bush - Tendergreen
Starting at $2.99
Bean Seeds - Bush - Early Thorogreen Limasmall size packet type seed packaging for - Bean Bush Early Thorogreen Lima
-0
Heirloom
Bean Seeds - Bush - Early Thorogreen Lima
Starting at $2.63
Leafy Greens Seed Assortment - 7 PackLeafy Greens Seed Assortment - 7 Pack
-0
Heirloom
Staff Favorite
Leafy Greens Seed Assortment - 7 Pack
$13.23
Kale Seeds - Dwarf Siberian - Organicsmall size packet type seed packaging for - Kale Dwarf Siberian Organic
-0
Heirloom
Organic
Kale Seeds - Dwarf Siberian - Organic
Starting at $3.59
Tomato Seeds - Cherry - Fox Cherry (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-0
Heirloom
Organic
Tomato Seeds - Cherry - Fox Cherry (Organic)
Starting at $3.59
Soybean - Black (Organic) - Sprouting SeedsSoybean - Black (Organic) - Sprouting Seeds
-0
Organic
Soybean - Black (Organic) - Sprouting Seeds
Starting at $10.56
Leek Seeds - CarentanLeek Seeds - Carentan
-0
Heirloom
Leek Seeds - Carentan
Starting at $2.99
Pepper Seeds - Sweet - Canary Bellmid size pouch type seed packaging for - Pepper Sweet Canary Bell
-0
Pepper Seeds - Sweet - Canary Bell
Starting at $2.99
Mustard Seeds - Misome Hybridmid size pouch type seed packaging for - Mustard Misome Hybrid
-0
Mustard Seeds - Misome Hybrid
Starting at $3.99
Onion Seeds - Bunching - Red BeardOnion Seeds - Bunching - Red Beard
-0
Heirloom
Onion Seeds - Bunching - Red Beard
Starting at $3.99
Green Lentils (Organic) - Bulk Grains & FoodsGreen Lentils (Organic) - Bulk Grains & Foods
-0
Organic
Green Lentils (Organic) - Bulk Grains & Foods
Starting at $6.64
Cucumber Seeds - Rhinish PickleCucumber Seeds - Rhinish Pickle
-0
Heirloom
Cucumber Seeds - Rhinish Pickle
Starting at $2.99
Melon Seeds - Cantaloupe - Honey Rocksmall size packet type seed packaging for - Melon Cantaloupe Honey Rock
-0
AAS Winner
Heirloom
Melon Seeds - Cantaloupe - Honey Rock
Starting at $2.99
Squash Seeds - Korean, Summer - King Ka Ae - Hybridmid size pouch type seed packaging for - Squash Korean Summer King Ka Ae Hybrid
-0
Squash Seeds - Korean, Summer - King Ka Ae -...
Starting at $3.99
Mustard Seeds - Mizuna Red StreaksMustard Seeds - Mizuna Red Streaks
-0
Heirloom
Staff Favorite
Mustard Seeds - Mizuna Red Streaks
Starting at $3.99
Squash Seeds - Summer - Scallop Yellow Bush (Organic)mid size pouch type seed packaging for - Squash Summer Scallop Yellow Bush Organic
-0
Organic
Squash Seeds - Summer - Scallop Yellow Bush (Organic)
Starting at $3.59
Bean Seeds - Pole - Yu Long Noodle Kin Yard Longmid size pouch type seed packaging for - Bean Pole Yu Long Noodle Kin Yard Long
-0
Heirloom
Bean Seeds - Pole - Yu Long Noodle Kin Yard...
Starting at $3.99
Mustard Seeds -  Japanese Red Giantmid size pouch type seed packaging for - Mustard Japanese Red Giant
-0
Heirloom
Mustard Seeds - Japanese Red Giant
Starting at $3.99
Pak Choi Seeds - Rosette TatsoiPak Choi Seeds - Rosette Tatsoi
-0
Heirloom
Pak Choi Seeds - Rosette Tatsoi
Starting at $3.99
Carrot Seeds - Little Fingers - Organicsmall size packet type seed packaging for - Carrot Little Fingers Organic
-0
Heirloom
Organic
Carrot Seeds - Little Fingers - Organic
Starting at $3.59
Gourd Seeds, Wax - Winter Melon Roundmid size pouch type seed packaging for - Gourd Wax Winter Melon Round
-0
Heirloom
Gourd Seeds, Wax - Winter Melon Round
Starting at $3.69
Pea Seeds - Shelling - Progress No. 9mid size pouch type seed packaging for - Pea Shelling Progress No 9
-0
Heirloom
Pea Seeds - Shelling - Progress No. 9
Starting at $3.29
Pepper Seeds - Hot - Super Chili HybridPepper Seeds - Hot - Super Chili Hybrid
-0
AAS Winner
Pepper Seeds - Hot - Super Chili Hybrid
Starting at $4.29
Pepper Seeds - Hot - Poblano Ancho Grande
Starting at $2.99
Cucumber Seeds - Boston Pickling (Organic)
Starting at $3.59
Seed Potatoes - Spring - Russet (Organic)
Starting at $9.28
[ { "featured_image": "products/tomato-patio-hybrid-seed-wm_700.jpg", "secondary_image": "products/Seed_Pouch_1_1_1_91d2ed15-719a-4258-8271-f4bbe59a72df.jpg", "price": 399, "handle": "tomato-patio-hybrid-seeds", "title": "Tomato Seeds - Slicing - Patio Hybrid", "url": "/products/tomato-patio-hybrid-seeds", "available": true }, { "featured_image": "files/pepper-hot-ancho-grande-seeds-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_028891b9-c23d-415d-8363-145bc6997170.jpg", "price": 299, "handle": "pepper-hot-ancho-grande-seeds", "title": "Pepper Seeds - Hot - Poblano Ancho Grande", "url": "/products/pepper-hot-ancho-grande-seeds", "available": false }, { "featured_image": "files/gourd-seeds-buab-moom-hybrid-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_a55900f1-c3f5-49f0-9be0-f073c8af164c.png", "price": 279, "handle": "gourd-seeds-buab-moom-hybrid", "title": "Gourd Seeds - Buab Moom - Hybrid - Kitazawa Spring SALE", "url": "/products/gourd-seeds-buab-moom-hybrid", "available": true }, { "featured_image": "files/beet-seeds-bulls-blood-organic-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_3775d296-ba01-4af3-a7f8-31b7d997922c.jpg", "price": 359, "handle": "beet-seeds-bulls-blood-organic", "title": "Beet Seeds - Bulls Blood - Organic", "url": "/products/beet-seeds-bulls-blood-organic", "available": true }, { "featured_image": "files/pepper-seeds-hot-caribbean-blend-comp.jpg", "secondary_image": "products/MVS-generic-packet-com_31b0191b-ac98-4aa5-9a97-c0722d5830d9.jpg", "price": 299, "handle": "pepper-seeds-hot-caribbean-blend", "title": "Pepper Seeds - Hot - Caribbean Blend", "url": "/products/pepper-seeds-hot-caribbean-blend", "available": true }, { "featured_image": "files/tomato-brandywine-red-seeds-com-wm_1222x1222_f5cc0028-3025-4c14-9b4b-8a67adcd4aa6.jpg", "secondary_image": "products/non-gmo-sprouting-seed_c82c2bbf-08d3-4392-850f-2b808adfe9d0.jpg", "price": 299, "handle": "tomato-brandywine-red-seeds", "title": "Tomato Seeds - Slicing - Brandywine Red Regular Leaf", "url": "/products/tomato-brandywine-red-seeds", "available": true }, { "featured_image": "files/watermelon-seeds-all-sweet-Comp.jpg", "secondary_image": "products/Seed_Packet_1_1_1_1_114e2636-5a89-4ff9-b5ff-e751ae31a755.jpg", "price": 329, "handle": "watermelon-seeds-all-sweet", "title": "Watermelon Seeds - Picnic - All Sweet", "url": "/products/watermelon-seeds-all-sweet", "available": true }, { "featured_image": "files/bean-bush-tendergreen-comp.jpg", "secondary_image": "products/MVS-generic-packet_1_c211bc1c-6344-4ef2-977c-9ff9ee3acc2e.jpg", "price": 299, "handle": "bean-bush-tendergreen", "title": "Bean Seeds - Bush - Tendergreen", "url": "/products/bean-bush-tendergreen", "available": true }, { "featured_image": "files/early-thorogreen-bush-lima-bean-comp.jpg", "secondary_image": "products/SSC-generic-packet_1_1_1_8a04d89e-d344-4cc1-b424-72c02ee3a2c2.jpg", "price": 263, "handle": "early-thorogreen-bush-lima-bean", "title": "Bean Seeds - Bush - Early Thorogreen Lima", "url": "/products/early-thorogreen-bush-lima-bean", "available": true }, { "featured_image": "files/Conventional-Leafy-Greens_7-Pack-Collage-Comp.jpg", "secondary_image": "files/Conventional-Leafy-Greens-7-Pack-Comp.jpg", "price": 1323, "handle": "leafy-greens-seed-assortment-7-pack", "title": "Leafy Greens Seed Assortment - 7 Pack", "url": "/products/leafy-greens-seed-assortment-7-pack", "available": true }, { "featured_image": "files/organic-siberian-dwarf-kale-seeds-comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_6f0ffee3-1dc7-4133-803b-a340bb5e613f.jpg", "price": 359, "handle": "organic-siberian-dwarf-kale-seeds", "title": "Kale Seeds - Dwarf Siberian - Organic", "url": "/products/organic-siberian-dwarf-kale-seeds", "available": true }, { "featured_image": "files/tomato-fox-cherry-organic-l-com-wm_1222x1222_09bda1dc-f532-44d2-ad96-70dac8699391.jpg", "secondary_image": "files/Sustainable_1_lb.jpg", "price": 359, "handle": "tomato-seeds-fox-cherry-organic", "title": "Tomato Seeds - Cherry - Fox Cherry (Organic)", "url": "/products/tomato-seeds-fox-cherry-organic", "available": true }, { "featured_image": "files/organic-black-soybean-sprouting-seeds-comp.jpg", "secondary_image": "products/black-soybeans-seed-wm_700.jpg", "price": 1056, "handle": "organic-black-soybean-sprouting-seeds", "title": "Soybean - Black (Organic) - Sprouting Seeds", "url": "/products/organic-black-soybean-sprouting-seeds", "available": true }, { "featured_image": "files/leek-seeds-carantan-Comp.jpg", "secondary_image": "products/Seed_Pouch_b299afff-36b0-4732-8330-beae6f37bf9c_1_1.jpg", "price": 299, "handle": "leek-seeds-carentan", "title": "Leek Seeds - Carentan", "url": "/products/leek-seeds-carentan", "available": true }, { "featured_image": "files/pepper-sweet-canary-bell-yellow-seeds-comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_a45cab07-f542-4957-b6ee-293c2dad04cb.jpg", "price": 299, "handle": "pepper-sweet-canary-bell-yellow-seeds", "title": "Pepper Seeds - Sweet - Canary Bell", "url": "/products/pepper-sweet-canary-bell-yellow-seeds", "available": true }, { "featured_image": "products/cucumber-boston-pickling-organic-l-com-wm.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_1acb419b-5e94-4f41-b85b-d1829f9ca1c1.jpg", "price": 359, "handle": "cucumber-seeds-boston-pickling-organic", "title": "Cucumber Seeds - Boston Pickling (Organic)", "url": "/products/cucumber-seeds-boston-pickling-organic", "available": false }, { "featured_image": "files/mustard-seeds-misome-hybrid-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_6da1bf64-69c4-4195-9b59-19f18ed0cbef.png", "price": 399, "handle": "mustard-seeds-misome-hybrid", "title": "Mustard Seeds - Misome Hybrid", "url": "/products/mustard-seeds-misome-hybrid", "available": true }, { "featured_image": "files/onion-seeds-bunching-red-beard-comp.jpg", "secondary_image": "products/1658875372_Red-Beard-Bunching-Onion-Japanese-roots-wm-comp.jpg", "price": 399, "handle": "onion-seeds-bunching-red-beard", "title": "Onion Seeds - Bunching - Red Beard", "url": "/products/onion-seeds-bunching-red-beard", "available": true }, { "featured_image": "files/organic-green-lentil-sprouting-seeds-comp.jpg", "secondary_image": "products/4-oz-green-lentil-seed-wm_700.jpg", "price": 664, "handle": "organic-green-lentil-sprouting-seeds", "title": "Green Lentils (Organic) - Bulk Grains & Foods", "url": "/products/organic-green-lentil-sprouting-seeds", "available": true }, { "featured_image": "files/cucumber-seeds-rhinish-pickle-Comp.jpg", "secondary_image": "products/Seed_Pouch_3.jpg", "price": 299, "handle": "cucumber-seeds-rhinish-pickle", "title": "Cucumber Seeds - Rhinish Pickle", "url": "/products/cucumber-seeds-rhinish-pickle", "available": true }, { "featured_image": "files/Melon-Honey-Rock-Comp.jpg", "secondary_image": "products/MVS-generic-packet_1_69b1ba0c-dce8-4104-826a-6367fa452651.jpg", "price": 299, "handle": "melon-seeds-honey-rock", "title": "Melon Seeds - Cantaloupe - Honey Rock", "url": "/products/melon-seeds-honey-rock", "available": true }, { "featured_image": "files/squash-seeds-korean-summer-king-ka-ae-hybrid-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_a035fd7b-a26c-4524-acdb-27f4592634e5.png", "price": 399, "handle": "squash-seeds-korean-summer-king-ka-ae-hybrid", "title": "Squash Seeds - Korean, Summer - King Ka Ae - Hybrid", "url": "/products/squash-seeds-korean-summer-king-ka-ae-hybrid", "available": true }, { "featured_image": "files/mustard-mizuna-red-streaks-seeds-comp.jpg", "secondary_image": "files/KZ_1_lb.jpg", "price": 399, "handle": "mustard-mizuna-red-streaks-seeds", "title": "Mustard Seeds - Mizuna Red Streaks", "url": "/products/mustard-mizuna-red-streaks-seeds", "available": true }, { "featured_image": "files/organic-scallop-yellow-bush-squash-seed-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-4-oz-sm_cc6f6823-068a-4ba9-8950-404512e52765.png", "price": 359, "handle": "organic-scallop-yellow-bush-squash-seed", "title": "Squash Seeds - Summer - Scallop Yellow Bush (Organic)", "url": "/products/organic-scallop-yellow-bush-squash-seed", "available": true }, { "featured_image": "files/yard-long-bean-yu-long-noodle-kin-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_474d6bd0-e0b7-4f68-b760-d85a5103d2e9.png", "price": 399, "handle": "yard-long-bean-yu-long-noodle-kin", "title": "Bean Seeds - Pole - Yu Long Noodle Kin Yard Long", "url": "/products/yard-long-bean-yu-long-noodle-kin", "available": true }, { "featured_image": "files/mustard-red-giant-seed-wm_700_1222x1222_3ba7c623-ef7d-4530-a474-ce22619fcb31.jpg", "secondary_image": "products/non-gmo-sprouting-seed_2f31cf69-3134-4bc4-a147-b5418430dc8d.jpg", "price": 399, "handle": "mustard-red-giant-seeds", "title": "Mustard Seeds - Japanese Red Giant", "url": "/products/mustard-red-giant-seeds", "available": true }, { "featured_image": "files/Potato-Russet-organic-Comp.jpg", "secondary_image": "files/1736439502_white_woven_large_small_burlap_bags_comp_f6e0b516-38a2-4999-8aec-891958fa7a51.jpg", "price": 928, "handle": "seed-potatoes-russet", "title": "Seed Potatoes - Spring - Russet (Organic)", "url": "/products/seed-potatoes-russet", "available": false }, { "featured_image": "files/cabbage-seeds-pak-choi-rosette-tatsoi-Comp.jpg", "secondary_image": "files/KZ_1_lb_073ff987-aac0-48d8-915a-f1a1b9f880b5.jpg", "price": 399, "handle": "cabbage-seeds-pak-choi-rosette-tatsoi", "title": "Pak Choi Seeds - Rosette Tatsoi", "url": "/products/cabbage-seeds-pak-choi-rosette-tatsoi", "available": true }, { "featured_image": "files/organic-little-fingers-carrot-seed-comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_aa6534e1-c6c0-4ac0-9f31-5174901c7853.jpg", "price": 359, "handle": "organic-little-fingers-carrot-seed", "title": "Carrot Seeds - Little Fingers - Organic", "url": "/products/organic-little-fingers-carrot-seed", "available": true }, { "featured_image": "files/Gourd-Wax-Winter-Melon-Round-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_d3b38c7b-c728-465c-97d0-5284d41f079c.png", "price": 369, "handle": "gourd-seeds-wax-winter-melon-round", "title": "Gourd Seeds, Wax - Winter Melon Round", "url": "/products/gourd-seeds-wax-winter-melon-round", "available": true }, { "featured_image": "files/pea-progress-nine-comp.jpg", "secondary_image": "products/SeedPouch_50c55fb1-0cea-42e6-aec7-5474c5c29b98.jpg", "price": 329, "handle": "pea-progress-nine", "title": "Pea Seeds - Shelling - Progress No. 9", "url": "/products/pea-progress-nine", "available": true }, { "featured_image": "files/pepper-hot-super-chili-seeds-Comp.jpg", "secondary_image": "products/Seed_Pouch_1_a6b5bf11-a614-4475-88be-5258a03d3ce3.jpg", "price": 429, "handle": "pepper-hot-super-chili-seeds", "title": "Pepper Seeds - Hot - Super Chili Hybrid", "url": "/products/pepper-hot-super-chili-seeds", "available": true } ]