May is the main planting kickoff in cold-winter zones, when gardens finally move from starts and prep into full outdoor action. Early May often still favors hardy transplants and direct-sown cool-season crops, while mid-to-late May is when many areas can safely set out warm-season plants as frost risk drops. Keep hardening off seedlings, use row cover if nights run cold, and focus on steady watering and early weed control so young plants establish quickly.
Indoors (fresh harvests):
-
Microgreens: peas, broccoli, sunflowers, arugula
-
Sprouts: alfalfa, broccoli, radish, mung
-
Herbs & greens under lights: chives, parsley, mint
Crops to start indoors in good light: tomato, pepper, eggplant, basil, cucumber, squash, melons, zinnia, marigold
Transplants to move outdoors (harden first): broccoli, cabbage, cauliflower, kohlrabi, lettuce, onion, parsley, pansies, snapdragons — and by mid-to-late May, tomato, pepper, and eggplant as frost risk drops
Crops that can be directly sown outdoors in May: peas, spinach, kale, Swiss chard, beets, carrots, radishes, turnips, parsnip, dill, cilantro — and after last frost: beans, corn, cucumber, squash, sunflower, nasturtium, sweet peas
Cover crops: oats, field peas, hairy vetch, red clover
Tip: This zone group covers a lot of territory. Nothing replaces talking with experienced gardeners in your area and watching the weather closely.
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
Peppermint Seeds
90 Days. Peppermint Culinary Herb Seeds. Mentha sp. Non-GMO. A deliciously versatile and bright herb, peppermint seeds are a naturally occurring hybrid between culinary spearmint and watermint. Grown very similar...
Lemon Balm Seeds
Melissa officinalis Perennial. Non-GMO, Heirloom Lemon Balm Herb Garden Seed from True Leaf Market. Melissa officinalis. Lemon Balm resides in the mint family and is native to regions in West...
Spearmint Seeds
50-70 Days to maturity. Mentha spicata. Spearmint Seeds. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Enjoy the vibrant, fruity aroma of...
Peppermint Seeds (Organic)
Perennial herb garden seeds. Certified Organic by Oregon Tilth. Non-GMO, Heirloom Peppermint Herb Garden Seed from True Leaf Market. Mentha sp. Peppermint plants are cool perennial and hybrid mints native...
Chamomile Seeds - Roman
Non-GMO, Heirloom Roman Chamomile Herb Garden Seed from True Leaf Market. Chamaemelum Nobile. Roman Chamomile plants originated from North Africa and were later cultivated in Europe"as chamomile has an ancient...
Achillea Seeds - White Yarrow
2nd Year Maturity. Perennial. Non-GMO, Heirloom White Yarrow Achillea Herb Garden Seed from True Leaf Market. Achillea millefolium. Yarrow is a flowering perennial often used as a medicinal remedy or...
Cress Seeds - Watercress
Non-GMO, Heirloom Watercress Herb Garden Seed from True Leaf Market. Nasturtium officinale. Watercress, also known as "Yellowcress" is a hardy perennial native to regions in Asia and Europe. This trailing...
Chives Seeds - Garlic (Organic)
Non-GMO, Heirloom Organic Garlic Chives Herb Garden Seed from True Leaf Market. Allium tuberosum. Chives are native to regions in Asia and Europe. Organic Garlic Chives are also called "Chinese...
Lemon Mint Seeds
Monarda citriodora Annual. Non-GMO, Heirloom Lemon Mint Herb Garden Seed from True Leaf Market. Monarda citriodora. Lemon Mint resides in the mint family as a warm perennial. Lemon Mint develops...
Wild Bergamot Seeds - Bee Balm
65 Days to maturity. Monarda fistulosa. Bee Balm Wild Bergamot Seeds. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in garden plots, raised beds, borders, and pollinator gardens. A native wildflower...
Thyme Seeds - Winter
95 Days to maturity. Thymus vulgaris. 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, English...
Marshmallow Herb Seeds
60-90 Days to maturity. Althaea officinalis. Marshmallow Herb Seeds. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, and raised beds. A beautiful pollinator and traditional medicinal...
Parsley Seeds - Japanese Mitsuba
50-60 Days to maturity. Cryptotaenia japonica. Japanese Mitsuba Parsley Seeds. Non-GMO, annual/perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, and raised beds. The long stalks of this...
Horehound Seeds
85-90Days to maturity. Marrubium vulgare. Horehound Seeds. Non-GMO, perennial, organic, open-pollinated, heirloom. Horehound is a hardy perennial herb with silvery-green leaves and small white blooms, prized for its intense bittersweet,...
Fennel Seeds - Sweet
90-115 days. Foeniculum vulgare var. azuricum. Sweet Fennel Seeds. Non-GMO, annual, heirloom, open-pollinated. This early strain is suitable for garden plots, raised beds, and containers. Sweet Fennel is a cool-bulbing...
Salad Burnet Seeds
70-100 Days to maturity. Sanguisorba minor. Salad Burnet Seeds. Non-GMO, annual/perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Salad Burnet offers crisp, cucumber-flavored...
Garlic Chives Seeds - Geisha AAS
Geisha AAS Garlic Chives Seeds. 75 days to maturity from seed. 30 days to maturity from transplant. 2015 AAS National Winner. Allium tuberosum. Open pollinated, Perennial in zones 3-10. Can...
Chives Seeds - Garlic
85-90 Days to maturity. Allium tuberosum. Non-GMO, heirloom Garlic Chives Herb Garden Seed. Chives are native to regions in Asia and Europe. Garlic chive cultivars are also called "Chinese Chives"...
Hyssop Seeds
Non-GMO, Heirloom Hyssop Herb Garden Seed from True Leaf Market. Hyssopus officinalis. Hyssop is a flowering perennial herb native to regions in the Middle East. Shrub-like common Hyssop plants are...
Achillea Seeds - Golden Yarrow
2nd year maturity. Achillea filipendulina. Golden Yarrow Seeds. Non-GMO, perennial, heirloom, open-pollinated. This crop is suitable for garden plots, raised beds, and ornamental borders. Golden Yarrow (Cloth of Gold) is...
Dandelion Seeds - True (Wild)
Taraxacum officinale. Non-GMO, Heirloom True (Wild) Dandelion Herb Garden Seed from True Leaf Market. True wild Dandelions grow as tender perennials native to regions in Asia and Europe. Herbaceous and...
Savory Seeds - Winter
Non-GMO, Heirloom, Open Pollinated Winter Savory Herb Garden Seed from True Leaf Market. Satureja montana. Winter Savory is a warm semi-woody perennial native to regions in Europe, West Asia and...
[
{
"featured_image": "files/Peppermint-Seeds-comp.jpg",
"secondary_image": "products/SeedPouch_dd6490a7-5150-4c4d-964a-15be6c330286.jpg",
"price": 339,
"handle": "peppermint",
"title": "Peppermint Seeds",
"url": "/products/peppermint",
"available": true
},
{
"featured_image": "files/Chives_Seeds_-_Garlic.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_c2d01c36-d4f2-4eb1-ab05-d4a9a8518016.png",
"price": 299,
"handle": "chives-garlic-seeds",
"title": "Chives Seeds - Garlic",
"url": "/products/chives-garlic-seeds",
"available": false
},
{
"featured_image": "files/Lemon-Balm-Seeds-comp.jpg",
"secondary_image": "products/SeedPouch_59431437-7ab5-4107-ae39-96539d5e8263.jpg",
"price": 299,
"handle": "lemon-balm-seeds",
"title": "Lemon Balm Seeds",
"url": "/products/lemon-balm-seeds",
"available": true
},
{
"featured_image": "files/spearmint-seeds-comp.jpg",
"secondary_image": "",
"price": 299,
"handle": "spearmint-seeds",
"title": "Spearmint Seeds",
"url": "/products/spearmint-seeds",
"available": true
},
{
"featured_image": "files/1685978005_CopyofSustainable-WM-white_800x800px_5_1222x1222_415cab13-fda9-42e4-80d1-b216f8f06ad4.jpg",
"secondary_image": "",
"price": 359,
"handle": "peppermint-seeds-organic",
"title": "Peppermint Seeds (Organic)",
"url": "/products/peppermint-seeds-organic",
"available": true
},
{
"featured_image": "files/Chamomile-Seeds-Roman-comp.jpg",
"secondary_image": "products/MVS-generic-packet_c02f9c53-55a8-4b67-aab5-a4a9a931b303.jpg",
"price": 299,
"handle": "chamomile-roman",
"title": "Chamomile Seeds - Roman",
"url": "/products/chamomile-roman",
"available": true
},
{
"featured_image": "files/yarrow-white-seed-wm_700_1222x1222_b5eff7ab-4945-4305-9818-c15aa270ed35.jpg",
"secondary_image": "products/non-gmo-seed-bag-4-oz-sm_fa41beaa-a4aa-4c00-a4d5-fdc16ca1daf1.png",
"price": 299,
"handle": "yarrow-white-seeds",
"title": "Achillea Seeds - White Yarrow",
"url": "/products/yarrow-white-seeds",
"available": true
},
{
"featured_image": "files/Cress-Seeds-Watercress-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_156f60f8-4731-4f6f-929d-b6bb42a244c1.png",
"price": 339,
"handle": "cress-watercress",
"title": "Cress Seeds - Watercress",
"url": "/products/cress-watercress",
"available": true
},
{
"featured_image": "files/Hyssop-Seeds-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_946b542b-85f0-4d9b-8935-9532325d2efa.png",
"price": 299,
"handle": "hyssop-herb-seeds",
"title": "Hyssop Seeds",
"url": "/products/hyssop-herb-seeds",
"available": false
},
{
"featured_image": "files/chives-garlic-organic-comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_2681d0b0-116b-4690-b29e-21545dd830f2.jpg",
"price": 359,
"handle": "chives-garlic-organic",
"title": "Chives Seeds - Garlic (Organic)",
"url": "/products/chives-garlic-organic",
"available": true
},
{
"featured_image": "files/lemon-mint-seeds-comp.jpg",
"secondary_image": "products/SeedPouch_3148a595-eb8c-497d-883b-2b3a82311d6b.jpg",
"price": 299,
"handle": "lemon-mint-seeds",
"title": "Lemon Mint Seeds",
"url": "/products/lemon-mint-seeds",
"available": true
},
{
"featured_image": "files/lemon-bergamot-seeds-monarda-fistulosa-comp.jpg",
"secondary_image": "products/non-gmo-sprouting-seed_16bbfc8b-000c-406c-aed4-d1f9347ce794.jpg",
"price": 299,
"handle": "lemon-bergamot-seeds-monarda-fistulosa",
"title": "Wild Bergamot Seeds - Bee Balm",
"url": "/products/lemon-bergamot-seeds-monarda-fistulosa",
"available": true
},
{
"featured_image": "files/yarrow-golden-seeds-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-4-oz-sm.png",
"price": 299,
"handle": "yarrow-golden-seeds",
"title": "Achillea Seeds - Golden Yarrow",
"url": "/products/yarrow-golden-seeds",
"available": false
},
{
"featured_image": "files/Thyme-Seeds-Winter-comp.jpg",
"secondary_image": "",
"price": 299,
"handle": "thyme-seeds-winter",
"title": "Thyme Seeds - Winter",
"url": "/products/thyme-seeds-winter",
"available": true
},
{
"featured_image": "files/dandelion-seeds-true-wild-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sm_5acafd4f-c176-482f-b299-8641b0594a75.png",
"price": 339,
"handle": "dandelion-seeds-true-wild",
"title": "Dandelion Seeds - True (Wild)",
"url": "/products/dandelion-seeds-true-wild",
"available": false
},
{
"featured_image": "products/marshmallow-grown-wm_700.jpg",
"secondary_image": "products/non-gmo-sprouting-seed_d404cdd2-00e9-468a-884c-63a494627906.jpg",
"price": 299,
"handle": "marshmallow-herb-seeds",
"title": "Marshmallow Herb Seeds",
"url": "/products/marshmallow-herb-seeds",
"available": true
},
{
"featured_image": "files/parsley-seeds-japanese-mitsuba-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-premium_d6a44ac4-41ae-4395-94aa-e0130239e180.png",
"price": 399,
"handle": "parsley-seeds-japanese-mitsuba",
"title": "Parsley Seeds - Japanese Mitsuba",
"url": "/products/parsley-seeds-japanese-mitsuba",
"available": true
},
{
"featured_image": "files/horehound-seeds-Comp.jpg",
"secondary_image": "products/MVS-generic-packet_1_e000853e-d241-4c3f-8942-7a3854e57ede.jpg",
"price": 299,
"handle": "horehound-seeds",
"title": "Horehound Seeds",
"url": "/products/horehound-seeds",
"available": true
},
{
"featured_image": "files/fennel-sweet-wm_1_1222x1222_f0628768-38b2-43f3-b0b0-20a4768ca8b1.jpg",
"secondary_image": "products/Seed_Packet_1_1_1_1_1_17a1fdf4-73f5-422b-b123-709dfa7d0788.jpg",
"price": 299,
"handle": "fennel-seeds-sweet",
"title": "Fennel Seeds - Sweet",
"url": "/products/fennel-seeds-sweet",
"available": true
},
{
"featured_image": "files/salad-burnet-herb-seeds-Comp.jpg",
"secondary_image": "products/Seed_Packet_1_daae4a99-0190-492b-86fe-c2c11672277a.jpg",
"price": 299,
"handle": "salad-burnet-herb-seeds",
"title": "Salad Burnet Seeds",
"url": "/products/salad-burnet-herb-seeds",
"available": true
},
{
"featured_image": "files/savory-seeds-winter-Comp.jpg",
"secondary_image": "products/SeedPouch_cf2f1f31-51e9-4f11-9b06-cd0f242e4297.jpg",
"price": 379,
"handle": "savory-seeds-winter",
"title": "Savory Seeds - Winter",
"url": "/products/savory-seeds-winter",
"available": false
},
{
"featured_image": "files/1687363072_Untitled-2.jpg",
"secondary_image": "",
"price": 379,
"handle": "garlic-chives-seeds-geisha-aas",
"title": "Garlic Chives Seeds - Geisha AAS",
"url": "/products/garlic-chives-seeds-geisha-aas",
"available": true
}
]