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
Oats and Peas Cover Crop Seed Mix
50-70 Days to termination. Oat and Peas Cover Crop Mix Seeds. Non-GMO, annual, winter-killing, no-till, forage-friendly. Plant as a spring, summer, or fall cover crop to restore vital nutrients and...
Beet - Rainbow Blend - Microgreen Seeds
12 to 23 Days to Harvest. Beta vulgaris. Rainbow Blend Beet Microgreen Seeds. Non-GMO, open-pollinated, heirloom. This colorful blend combines multiple beet varieties to produce a tray of microgreens with...
Broccoli Seeds - Destiny Hybrid
70 to 75 days. Annual. Non-GMO Hybrid seeds. The Destiny Hybrid is a popular variety of the broccoli garden crop to grow. Destiny Hybrid seeds are more tolerant to heat...
The True Leaf Market Vegetable Growing Guide
Get the True Leaf Market Vegetable Planting Guide! The PDF version is free, just click below to download, or purchase the print booklet with FREE shipping. In this booklet, you'll...
Corn Seeds - Sweet - Silver King F1 Hybrid
80-90 Days to maturity. Zea mays. Silver King F1 Hybrid Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Deluxe Sprout Growing Kit
The ultimate sprouting starter kit for those interested in a serious approch to sprouts. Makes more than 100 pounds of sprouts! Includes a 3 tray stackable sprouter, instructions and an...
Onion Seeds - Bunching - Warrior AAS
60 Days to maturity. Allium fistulosum. Warrior Bunching Onion Seeds. Non-GMO, perennial, open-pollinated, AAS Regional winner (Southeast, Mountain/Southwest), bunching onion. Suitable for growing in greenhouses, garden plots, raised beds, and...
Mustard Seeds - Tatsoi
50 days. Non-GMO, Heirloom Tatsoi Mustard Herb Garden Seed from True Leaf Market. Brassica rapa subsp. narinosa. Tatsoi Mustard or "Spoon Mustard" comes from China and gained tradition as a...
Coleus Seeds - Wizard Series (Pelleted)
84-91 Days to maturity. Plectranthus scutellarioides’Wizard Series’. Coleus Wizard Series Seeds. Non-GMO, Annual. Wizard Series coleus seeds are a simple, compact, yet spectacular Asian showstopper perfect for many diverse gardens...
Bean Seeds - Bush - California Black-Eye Cowpeas
75 Days to maturity. Vigna unguiculata. California Black-Eyed Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, bush, shelling bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses. Cowpeas, or...
French Marigold Seeds - Bonanza Series (Coated)
56-63 Days to maturity. Tagetes patula. Bonanza Series French Marigold Seeds. Non-GMO, annual, open-pollinated. Bonanza Series French marigold seeds are brilliant, easy to grow, and renowned for their hardiness and...
Corn Seeds - Flint - Indian
100-110 Days to maturity. Zea mays. Ornamental - Indian Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Flint Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Onion Seeds - Short - Yellow Granex PRR Hybrid
110-160 Days to maturity. Allium cepa. Yellow Granex PRR Onion Seeds. Non-GMO, annual, hybrid, cold tolerant, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers....
Amaranthus Seeds - Elephant Head (Organic)
Amaranthus sp. One gram will sow 45 feet at (thinned) spacing of 12-18" on 24" rows. Organic Elephant Head Amaranth 75 days to harvest. The elongated, dense, flower spike of...
All Perennial Flower Seeds Mix
50-65 Days to maturity. All Perennial Mix Wildflower Seeds. Non-GMO perennials. Custom blended wildflower mix full of exclusively gorgeous perennials! This mixture is for ornamental landscaping. These plants can be...
Tomato Seeds - Slicing - Heirloom Rainbow Blend (Organic)
80-100 Days to maturity (from transplant). Solanum lycopersicum. Organic Heirloom Rainbow Blend Tomato Seeds. Non-GMO, warm season annual, organic, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots,...
Seed Assortment: Basic Dozen Microgreens
A basic assortment of microgreens seeds. Experiment with some variety in your microgreens salads and garnishes. A nice mix of inexpensive and more expensive seeds. Includes Amaranth, Basil, Radish, Kale,...
Alyssum Seeds - Royal Carpet
56-63 Days to maturity. Lobularia maritima. Royal Carpet Alyssum Seeds. Non-GMO, Open-Pollinated, Annual. Open-pollinated seeds. Royal Carpet Alyssum flower seeds are an essential fragrant and award-winning plant whether kept in...
Kohlrabi Seeds - Purple Vienna (Organic)
50-55 days. Brassica oleracea var. gongylodes. Organic Purple Vienna Kohlrabi Seeds. Non-GMO, annual, organic, heirloom, open-pollinated. This crop is suitable for containers, garden plots, raised beds, and fields. Classic purple-skinned...
Digitalis (Foxglove) Seeds - Mixed Color
2nd-year maturity. Digitalis purpurea. Digitalis Mixed Color Seeds. Non-GMO, Perennial. Mixed Color foxglove seeds grow classic and delicate blooms where other flowers would wither. Mixed Color seeds deliver compact 12-18"...
Mustard Seeds - Red Giant (Organic)
48 days. Non-GMO, Heirloom Organic Red Giant Mustard Herb Garden Seed from True Leaf Market. Brassica juncea. In general, mustard is an ideal garden plant to grow near herbs. As...
Bean Seeds - Bush - Aquadulce Fava
70-85 Days to maturity. Vicia faba. Organic Fava Bean Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, bush, shell, fava bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Pepper Seeds - Sweet - Gypsy F1 Hybrid
62 Days to maturity (from transplant). Capsicum annuum. Gypsy F1 Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, AAS Winner, sweet-type, with no heat. 0 Scoville Heat Units. Suitable for growing...
Thyme Seeds - Winter (Organic)
95 Days to maturity. Thymus vulgaris. Organic Winter Thyme Seeds. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Common Thyme, German Thyme,...
Cosmos Seeds - Bright Lights
56-63 days. Bright Lights cosmos seeds grow a playful, robust, and familiar annual sown among sunflowers and wildflowers. Bright Lights seeds grow hardy, drought tolerant cosmos shrubs as high as...
Echinacea Seeds - Cheyenne Spirit
70-80 days maturity. Echinacea x hybrida. Echinacea Cheyenne Spirit Seeds. Non-GMO, Heirloom, Perennial. Echinacea grows as a warm-season perennial and flowering herb native to Central North America. This vigorous echinacea...
Shasta Daisy Seeds - Alaska
2nd-year maturity. Leucanthemum × superbum. Shasta Daisy Alaska Seeds. Non-GMO, Perennial. Ornamental. Shasta daisy Alaska seeds promise classic, home-grown American color to your home, patio, or garden this season. Alaska...
Asparagus Seeds - UC 157 F2
2-3 years to first harvest. Non-GMO, perennial, F2 Hybrid asparagus seeds. UC 157 F2 Hybrid Asparagus Seeds. This variety was developed at the University of California, Riverside in 1978 by...
Lettuce Seeds - Jericho
(26 days for baby greens, 56 days for full size) Jericho Lettuce Seeds. Silky smooth neon green romaine leaves reach for the sky in this amazing lettuce with origins in...
[
{
"featured_image": "files/cover_crop_oats_and_peas_mix_person_comp.jpg",
"secondary_image": "files/oats-and-peas-cover-crop-seed-mix-Comp.jpg",
"price": 428,
"handle": "oats-and-peas-cover-crop-seed-mix",
"title": "Oats and Peas Cover Crop Seed Mix",
"url": "/products/oats-and-peas-cover-crop-seed-mix",
"available": true
},
{
"featured_image": "files/Beet_Rainbow_Blend_Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_89223a01-d3ba-4390-b07d-edcaeb9414d8.png",
"price": 806,
"handle": "beet-seeds-rainbow-blend",
"title": "Beet - Rainbow Blend - Microgreen Seeds",
"url": "/products/beet-seeds-rainbow-blend",
"available": true
},
{
"featured_image": "files/broccoli-destiny-hybrid-Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_09cf96d8-65d2-49a5-ad34-0ae67efec2b6.png",
"price": 399,
"handle": "broccoli-destiny-hybrid",
"title": "Broccoli Seeds - Destiny Hybrid",
"url": "/products/broccoli-destiny-hybrid",
"available": true
},
{
"featured_image": "files/vegetable-grow-guide-comp.jpg",
"secondary_image": "products/veggie-book-sm.jpg",
"price": 500,
"handle": "vegetable-grow-guide",
"title": "The True Leaf Market Vegetable Growing Guide",
"url": "/products/vegetable-grow-guide",
"available": true
},
{
"featured_image": "files/corn-popcorn-robust-yellow-hulles-hybrid-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_5df6c169-c120-48fa-aade-83fb24b9ce5d.png",
"price": 429,
"handle": "corn-popcorn-robust-yellow-hulless-hybrid",
"title": "Corn Seeds - Popcorn - Robust Yellow Hulless F1 Hybrid",
"url": "/products/corn-popcorn-robust-yellow-hulless-hybrid",
"available": true
},
{
"featured_image": "files/corn-se-silver-king-hybrid-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_4599064f-fabe-4003-92e3-445e7f7ad282.png",
"price": 439,
"handle": "corn-se-silver-king-hybrid",
"title": "Corn Seeds - Sweet - Silver King F1 Hybrid",
"url": "/products/corn-se-silver-king-hybrid",
"available": true
},
{
"featured_image": "files/Handy_Pantry_-_Deluxe_Beginners_Dozen_Kit_1.jpg",
"secondary_image": "products/sprouter-and-grown-sprouts-wm_700.jpg",
"price": 14197,
"handle": "deluxe-sprout-growing-kit",
"title": "Deluxe Sprout Growing Kit",
"url": "/products/deluxe-sprout-growing-kit",
"available": true
},
{
"featured_image": "files/asparagus-uc-157-f2-wm_700_1222x1222_d6300f7a-00b7-4978-baa9-f45afb3cb5c7.jpg",
"secondary_image": "",
"price": 299,
"handle": "asparagus-seeds-uc-157-f2",
"title": "Asparagus Seeds - UC 157 F2",
"url": "/products/asparagus-seeds-uc-157-f2",
"available": false
},
{
"featured_image": "files/onion-bunching-warrior-conventional-l-com-wm_1222x1222_1bf8fed6-da4d-4f65-aa7e-72b8dec709df.jpg",
"secondary_image": "products/MVS-generic-packet-com_fdb744da-33bf-4003-b951-0227b3b9bb20.jpg",
"price": 299,
"handle": "onion-seeds-bunching-warrior-aas",
"title": "Onion Seeds - Bunching - Warrior AAS",
"url": "/products/onion-seeds-bunching-warrior-aas",
"available": true
},
{
"featured_image": "files/Mustard_Tatsoi_Comp.jpg",
"secondary_image": "",
"price": 399,
"handle": "mustard-tatsoi-seeds",
"title": "Mustard Seeds - Tatsoi",
"url": "/products/mustard-tatsoi-seeds",
"available": true
},
{
"featured_image": "files/Coleus-Wizard-Series-Mix-Pelleted-Comp.jpg",
"secondary_image": "files/coleus-wizard-series-flower-seeds-comp.jpg",
"price": 339,
"handle": "coleus-wizard-series-flower-seeds",
"title": "Coleus Seeds - Wizard Series (Pelleted)",
"url": "/products/coleus-wizard-series-flower-seeds",
"available": true
},
{
"featured_image": "files/bean-bush-california-black-eye-cowpeas-Comp.jpg",
"secondary_image": "products/MVS-generic-packet_1_6af5addd-7219-46cc-bd63-a115ee1b005f.jpg",
"price": 366,
"handle": "bean-bush-california-black-eye-cowpeas",
"title": "Bean Seeds - Bush - California Black-Eye Cowpeas",
"url": "/products/bean-bush-california-black-eye-cowpeas",
"available": true
},
{
"featured_image": "files/marigold-bonanza-series-flower-seeds-Comp.jpg",
"secondary_image": "products/marigold-bonanza-series-flame-flower-wm_700.jpg",
"price": 419,
"handle": "marigold-bonanza-series-flower-seeds",
"title": "French Marigold Seeds - Bonanza Series (Coated)",
"url": "/products/marigold-bonanza-series-flower-seeds",
"available": true
},
{
"featured_image": "files/corn-ornamental-indian-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_312f74a3-a8f7-4786-ba50-47a1069b7bc7.png",
"price": 359,
"handle": "corn-ornamental-indian",
"title": "Corn Seeds - Flint - Indian",
"url": "/products/corn-ornamental-indian",
"available": true
},
{
"featured_image": "files/onion-seeds-hybrid-yellow-granex-prr-f1-comp.jpg",
"secondary_image": "products/Seed_Pouch_1_ecba499e-3058-4869-a99b-9212bd22725d.jpg",
"price": 399,
"handle": "onion-seeds-hybrid-yellow-granex-prr-f1",
"title": "Onion Seeds - Short - Yellow Granex PRR Hybrid",
"url": "/products/onion-seeds-hybrid-yellow-granex-prr-f1",
"available": true
},
{
"featured_image": "files/organic-elephant-head-amaranth-Comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com.jpg",
"price": 359,
"handle": "organic-elephant-head-amaranth",
"title": "Amaranthus Seeds - Elephant Head (Organic)",
"url": "/products/organic-elephant-head-amaranth",
"available": true
},
{
"featured_image": "files/flower-seed-wildflower-mixes-all-perennial-mix-comp.jpg",
"secondary_image": "products/all-perennial-wildflower-mix-com-wm.jpg",
"price": 399,
"handle": "flower-seed-wildflower-mixes-all-perennial-mix",
"title": "All Perennial Flower Seeds Mix",
"url": "/products/flower-seed-wildflower-mixes-all-perennial-mix",
"available": true
},
{
"featured_image": "files/tomato-seeds-heirloom-blend-organic-Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-1-lb-com_e6bb42e5-5a55-4eef-84c3-a25dbc34c059.jpg",
"price": 359,
"handle": "tomato-seeds-heirloom-blend-organic",
"title": "Tomato Seeds - Slicing - Heirloom Rainbow Blend (Organic)",
"url": "/products/tomato-seeds-heirloom-blend-organic",
"available": true
},
{
"featured_image": "files/basic-microgreens-dozen-assortment-wm_1222x1222_b34d00c1-cc00-4a53-9bff-43cc74e74e82.jpg",
"secondary_image": "products/micro-amaranth-greens-wm_700_800x_2bafc296-d0bf-401c-96b6-11d806315bae.jpg",
"price": 9067,
"handle": "basic-dozen-microgreen-assortment",
"title": "Seed Assortment: Basic Dozen Microgreens",
"url": "/products/basic-dozen-microgreen-assortment",
"available": true
},
{
"featured_image": "files/Basil-Seeds-Italian-Large-Leaf-microgreens-Seeds-comp.jpg",
"secondary_image": "products/basil-italian-large-leaf-microgreens-wb-wm.jpg",
"price": 865,
"handle": "basil-seeds-italian-large-leaf-microgreens-seeds",
"title": "Basil Seeds - Italian Large Leaf - Microgreens Seeds",
"url": "/products/basil-seeds-italian-large-leaf-microgreens-seeds",
"available": true
},
{
"featured_image": "files/alyssum-royal-carpet-seed-wm_700_1222x1222_27e3c9c1-2abb-4024-a3ab-7e47dd054a86.jpg",
"secondary_image": "products/non-gmo-seed-bag-1-oz-sm_2b82e41c-26e4-43db-a51b-f10fff44ecd0.png",
"price": 299,
"handle": "alyssum-royal-carpet-flower-seeds",
"title": "Alyssum Seeds - Royal Carpet",
"url": "/products/alyssum-royal-carpet-flower-seeds",
"available": true
},
{
"featured_image": "files/kohlrabi-seeds-purple-vienna-organic-Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sus-wm-comp_478ecc50-adec-4191-99c5-087e81ef5a19.jpg",
"price": 359,
"handle": "kohlrabi-seeds-purple-vienna-organic",
"title": "Kohlrabi Seeds - Purple Vienna (Organic)",
"url": "/products/kohlrabi-seeds-purple-vienna-organic",
"available": true
},
{
"featured_image": "files/digitalis-foxglove-mixed-seed-wm_700_1222x1222_f124cff4-260a-435d-a204-8cc73a89f425.jpg",
"secondary_image": "products/non-gmo-seed-bag-4-oz-sm_e33d6d42-9a19-44a3-b6ae-a401073fa3e8.png",
"price": 299,
"handle": "digitalis-foxglove-mixed-color-flower-seeds",
"title": "Digitalis (Foxglove) Seeds - Mixed Color",
"url": "/products/digitalis-foxglove-mixed-color-flower-seeds",
"available": true
},
{
"featured_image": "files/mustard-red-giant-organic-seeds-Comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_4d2915a2-118c-42da-81f9-2e831b92862f.jpg",
"price": 359,
"handle": "mustard-red-giant-organic-seeds",
"title": "Mustard Seeds - Red Giant (Organic)",
"url": "/products/mustard-red-giant-organic-seeds",
"available": true
},
{
"featured_image": "files/jericho-lettuce-seeds-comp.jpg",
"secondary_image": "products/Seed_Packet_ba7eeb32-7a8e-4965-b509-dd2883f3289e.jpg",
"price": 299,
"handle": "jericho-lettuce-seeds",
"title": "Lettuce Seeds - Jericho",
"url": "/products/jericho-lettuce-seeds",
"available": false
},
{
"featured_image": "files/bean-seeds-fava-aquadulce-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_3efd82e5-4c3d-43b7-9b3b-326ce1830d0c.png",
"price": 511,
"handle": "bean-seeds-fava-aquadulce",
"title": "Bean Seeds - Bush - Aquadulce Fava",
"url": "/products/bean-seeds-fava-aquadulce",
"available": true
},
{
"featured_image": "files/organic-early-prolific-straightneck-squash-comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_d69953eb-24c7-4d9a-9d0f-a3399e9dbad5.jpg",
"price": 359,
"handle": "organic-early-prolific-straightneck-squash",
"title": "Squash Seeds - Summer - Early Prolific Straightneck (Organic)",
"url": "/products/organic-early-prolific-straightneck-squash",
"available": true
},
{
"featured_image": "files/pepper-sweet-gypsy-hybrid-seeds-comp.jpg",
"secondary_image": "products/Seed_Pouch_1_24657420-7c4c-471f-a9c3-35925f8e5446.jpg",
"price": 199,
"handle": "pepper-sweet-gypsy-hybrid-seeds",
"title": "Pepper Seeds - Sweet - Gypsy F1 Hybrid",
"url": "/products/pepper-sweet-gypsy-hybrid-seeds",
"available": true
},
{
"featured_image": "files/certified-organic-heirloom-vegetable-seeds-organic-herb-seeds-organic-winter-thyme-herb-seed-comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_cecb971b-8882-4981-8575-894c8b2aae43.jpg",
"price": 359,
"handle": "certified-organic-heirloom-vegetable-seeds-organic-herb-seeds-organic-winter-thyme-herb-seed",
"title": "Thyme Seeds - Winter (Organic)",
"url": "/products/certified-organic-heirloom-vegetable-seeds-organic-herb-seeds-organic-winter-thyme-herb-seed",
"available": true
},
{
"featured_image": "files/cosmos-bright-lights-flower-seeds-Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_60a5ccdf-9c53-447d-aa22-befeecdfc8e7.png",
"price": 299,
"handle": "cosmos-bright-lights-flower-seeds",
"title": "Cosmos Seeds - Bright Lights",
"url": "/products/cosmos-bright-lights-flower-seeds",
"available": true
},
{
"featured_image": "files/echinacea-cheyenne-spirit-flower-seeds-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-1-oz-sm_f18bfc3b-bd6f-44fd-956d-85e941220df8.png",
"price": 679,
"handle": "echinacea-cheyenne-spirit-flower-seeds",
"title": "Echinacea Seeds - Cheyenne Spirit",
"url": "/products/echinacea-cheyenne-spirit-flower-seeds",
"available": true
},
{
"featured_image": "files/shasta-daisy-alaska-seeds-flower-seeds-Comp.jpg",
"secondary_image": "products/SeedPouch_68bb3259-6c74-4e67-a16c-e2d9fcb0647a.jpg",
"price": 299,
"handle": "shasta-daisy-alaska-seeds-flower-seeds",
"title": "Shasta Daisy Seeds - Alaska",
"url": "/products/shasta-daisy-alaska-seeds-flower-seeds",
"available": true
}
]