Skip To Content Close Keyboard Navigation

Your cart

Close

Your cart is currently empty.

x

Cold Winter Areas

Zones: 1–7a

These zones experience cold winters with extended periods of freezing temperatures. In March, monitor soil conditions, thaw cycles, and late frosts as you prepare for early outdoor sowing. Indoors, this is a busy month for starting cool-season crops and hardy flowers under lights or in a greenhouse so they are ready to transplant as soon as the weather warms.

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: bunching onion, eggplant, tomato, pepper, zinnia, basil, Swiss chard, cosmos

Transplants to move outdoors (weather permitting - harden first): Onion, parsley, broccoli, cabbage, kohlrabi, arugula, pansy, viola

Crops that can be directly sown outdoors in March (assume intermittent frosts; a low tunnel or row cover makes most of these reliable): pak choi, cabbage, kale, mustard, fava bean, pea, turnip, parsnip, sweet pea

Cover crops: winter rye, fava bean, hairy vetch, red or white clover, and cover crop mixes.

Tip: This zone group covers a lot of territory. Nothing takes the place of talking with experienced gardeners in your area and, of course, watching the weather closely.

Use your USDA zone as a guide. Microclimates matter—coastal/urban spots run warmer; high elevation runs colder. 7b pockets can follow “Mild” recommendations with protection.

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
32 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" }
Nasturtium Seeds - Jewel MixNasturtium Seeds - Jewel Mix
-0
Staff Favorite
Nasturtium Seeds - Jewel Mix
Starting at $2.99
Zinnia Seeds - California Giant MixZinnia Seeds - California Giant Mix
-0
Zinnia Seeds - California Giant Mix
Starting at $2.99
Wildflower Seeds - Bee MixWildflower Seeds - Bee Mix
-0
Wildflower Seeds - Bee Mix
Starting at $2.99
No-Till Forage Friendly Cover Crop MixNo-Till Forage Friendly Cover Crop Mix
-0
No-Till Forage Friendly Cover Crop Mix
Starting at $5.13
French Marigold Seeds - Petite Mixturemid size pouch type seed packaging for - French Marigold Petite Mixture
-0
French Marigold Seeds - Petite Mixture
Starting at $2.99
Zinnia Seeds - Lilliput MixtureZinnia Seeds - Lilliput Mixture
-0
Zinnia Seeds - Lilliput Mixture
Starting at $2.99
Flower Mix - Zinnia Special CollectionFlower Mix - Zinnia Special Collection
-0
Staff Favorite
Flower Mix - Zinnia Special Collection
Starting at $6.00
Cosmos Seeds - Sensation Mixturesmall size packet type seed packaging for - Cosmos Sensation Mixture
-0
AAS Winner
Cosmos Seeds - Sensation Mixture
Starting at $2.99
Zinnia Seeds - State Fair Mixmid size pouch type seed packaging for - Zinnia State Fair Mix
-0
Zinnia Seeds - State Fair Mix
Starting at $3.39
Zinnia Seeds - Thumbelina Mixturemid size pouch type seed packaging for - Zinnia Thumbelina Mixture
-0
AAS Winner
Zinnia Seeds - Thumbelina Mixture
Starting at $2.99
Zinnia Seeds - Dreamland Mixture (Coated)mid size pouch type seed packaging for - Zinnia Dreamland Mixture Coated
-0
Zinnia Seeds - Dreamland Mixture (Coated)
Starting at $4.59
Cosmos Seeds - Sonata Mixmid size pouch type seed packaging for - Cosmos Sonata Mix
-0
Cosmos Seeds - Sonata Mix
Starting at $4.19
California Poppy Seeds - Mission Bellsmid size pouch type seed packaging for - California Poppy Mission Bells
-0
California Poppy Seeds - Mission Bells
Starting at $2.99
Zinnia Seeds - Pollinator Flower Mixsmall size packet type seed packaging for - Zinnia Pollinator Flower Mix
-0
Zinnia Seeds - Pollinator Flower Mix
Starting at $2.99
Edible Flower Seed Mixmid size pouch type seed packaging for - Edible Flower Mix
-0
Edible Flower Seed Mix
Starting at $3.59
Grass Mix - Cabin Grass Seedmid size pouch type seed packaging for - Grass Mix Cabin Grass
-0
Heirloom
Staff Favorite
Grass Mix - Cabin Grass Seed
Starting at $20.59
Wildflower Seeds - Cutting Mix (Organic)Wildflower Seeds - Cutting Mix (Organic)
-0
Organic
Wildflower Seeds - Cutting Mix (Organic)
Starting at $5.29
Mixed Greens Seeds - Braising Mixmid size pouch type seed packaging for - Zinnia Magellan Series Orange
-0
Heirloom
Mixed Greens Seeds - Braising Mix
Starting at $2.99
Thunbergia Seeds - Alata Mixmid size pouch type seed packaging for - Thunbergia Alata Mix
-0
Thunbergia Seeds - Alata Mix
Starting at $2.99
Pumpkin Seeds - Mini Harvest F1 Mixsmall size packet type seed packaging for - Pumpkin Mini Harvest F1 Mix
-0
Pumpkin Seeds - Mini Harvest F1 Mix
Starting at $3.99
Basil Seeds - Ornamental Mixturesmall size packet type seed packaging for - Basil Ornamental Mixture
-0
Heirloom
Basil Seeds - Ornamental Mixture
Starting at $2.99
Zinnia Seeds - Thumbelina Mix (Organic)small size packet type seed packaging for - Zinnia Thumbelina Mix Organic
-0
Organic
Zinnia Seeds - Thumbelina Mix (Organic)
Starting at $3.59
Linaria Seeds - Spurred SnapdragonLinaria Seeds - Spurred Snapdragon
-0
Linaria Seeds - Spurred Snapdragon
Starting at $2.99
Kale Seeds - Garden Blend - Organicsmall size packet type seed packaging for - Kale Garden Blend Organic
-0
Heirloom
Organic
Kale Seeds - Garden Blend - Organic
Starting at $3.59
Swiss Chard Seeds - Rainbow Mixture
Starting at $3.89
French Marigold Seeds - Sparky Mixture
Starting at $2.99
Swiss Chard Seeds - Rainbow Mixture (Organic)
Starting at $3.69
Zinnia Seeds - Dahlia Flowered Mixture
Starting at $2.99
Lettuce Seeds - Heatwave Mix - Organic
Starting at $3.59
Pumpkin Seeds - Fall Rainbow Blend - Organic
Starting at $3.59
Endive Seeds - Gourmet Mix
Starting at $2.99
Cosmos Seeds - Dwarf Sensation Mix - Organic
Starting at $3.99
[ { "featured_image": "files/Nasturtium-Seeds-Jewel-Mix-comp.jpg", "secondary_image": "products/Seed_Pouch_1_78316f82-7672-4006-8e15-c0af80d92b83.jpg", "price": 299, "handle": "nasturtium-jewel-mix-flower-seeds", "title": "Nasturtium Seeds - Jewel Mix", "url": "/products/nasturtium-jewel-mix-flower-seeds", "available": true }, { "featured_image": "files/zinnia-california-giant-mix-seed-wm_700_1222x1222_6488a9ae-3bfc-45b5-a47c-516426a4818f.jpg", "secondary_image": "products/california-giant-supportive-1_7.jpg", "price": 299, "handle": "zinnia-california-giant-mix-flower-seed", "title": "Zinnia Seeds - California Giant Mix", "url": "/products/zinnia-california-giant-mix-flower-seed", "available": true }, { "featured_image": "files/Swiss-Chard-Seeds-Rainbow-Mixture-comp.jpg", "secondary_image": "products/Seed_Pouch_1_92723e9f-66a7-4d60-8301-6a14da878d97.jpg", "price": 389, "handle": "swiss-chard-rainbow-mixture-seeds", "title": "Swiss Chard Seeds - Rainbow Mixture", "url": "/products/swiss-chard-rainbow-mixture-seeds", "available": false }, { "featured_image": "files/1747763994_marigold_sparky_mixture_comp_1441bc85-22b2-4b16-ae5c-c34fcc8bbf25.jpg", "secondary_image": "files/French-Marigold-Seeds-Sparky-Mixture-comp.jpg", "price": 299, "handle": "marigold-sparky-mixture-flower-seeds", "title": "French Marigold Seeds - Sparky Mixture", "url": "/products/marigold-sparky-mixture-flower-seeds", "available": false }, { "featured_image": "files/Swiss-Chard-Seeds-Rainbow-Mixture-Organic-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_23ab5f2a-8c3e-4fe1-997e-d6ce7ef3d898.jpg", "price": 369, "handle": "swiss-chard-rainbow-mixture-organic-seeds", "title": "Swiss Chard Seeds - Rainbow Mixture (Organic)", "url": "/products/swiss-chard-rainbow-mixture-organic-seeds", "available": false }, { "featured_image": "files/zinnia-dahlia-flowered-mixture-seed-wm_700_1222x1222_31db1948-c539-4a8c-82fc-51dae701bde4.jpg", "secondary_image": "products/SeedPouch_5bb9154c-16a8-4add-a97b-f3093d3b8c77.jpg", "price": 299, "handle": "zinnia-dahlia-flowered-mixture-flower-seed", "title": "Zinnia Seeds - Dahlia Flowered Mixture", "url": "/products/zinnia-dahlia-flowered-mixture-flower-seed", "available": false }, { "featured_image": "files/Wildflower-Seeds-Bee-Mix-Comp.jpg", "secondary_image": "products/bee-friendly-wildflower-mix-wm_700.jpg", "price": 299, "handle": "bee-friendly-wildflower-mix-seeds", "title": "Wildflower Seeds - Bee Mix", "url": "/products/bee-friendly-wildflower-mix-seeds", "available": true }, { "featured_image": "files/Cover-Crop-Forage-Friendly-Seeds-Comp.jpg", "secondary_image": "files/1685461045_Cover-Crop-Forage-Friendly-compressed.jpg", "price": 513, "handle": "no-till-forage-friendly-cover-crop-mix", "title": "No-Till Forage Friendly Cover Crop Mix", "url": "/products/no-till-forage-friendly-cover-crop-mix", "available": true }, { "featured_image": "files/marigold-petite-mixture-flower-seeds-comp.jpg", "secondary_image": "products/SeedPouch_563b3d76-ba54-4cb0-98c4-423dd3e114da.jpg", "price": 299, "handle": "marigold-petite-mixture-flower-seeds", "title": "French Marigold Seeds - Petite Mixture", "url": "/products/marigold-petite-mixture-flower-seeds", "available": true }, { "featured_image": "files/zinnia-lilliput-mixture-flower-seed-comp.jpg", "secondary_image": "products/lilliput-supportive-2_1.jpg", "price": 299, "handle": "zinnia-lilliput-mixture-flower-seed", "title": "Zinnia Seeds - Lilliput Mixture", "url": "/products/zinnia-lilliput-mixture-flower-seed", "available": true }, { "featured_image": "files/Flower-Mix-Zinnia-Special-Collection-comp.jpg", "secondary_image": "products/1681229849_CopyofTL-WM-Black_600x600px_100.jpg", "price": 600, "handle": "flower-mix-zinnia-special-collections", "title": "Flower Mix - Zinnia Special Collection", "url": "/products/flower-mix-zinnia-special-collections", "available": true }, { "featured_image": "files/cosmos-sensation-mixture-flower-seeds-comp.jpg", "secondary_image": "products/SeedPacket_9355dd58-999b-411b-85d7-396ca6238bb9.jpg", "price": 299, "handle": "cosmos-sensation-mixture-flower-seeds", "title": "Cosmos Seeds - Sensation Mixture", "url": "/products/cosmos-sensation-mixture-flower-seeds", "available": true }, { "featured_image": "files/zinnia-state-fair-mix-flower-seed-comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_079ee3c1-e2ea-4086-944f-ff6d50506058.jpg", "price": 339, "handle": "zinnia-state-fair-mix-flower-seed", "title": "Zinnia Seeds - State Fair Mix", "url": "/products/zinnia-state-fair-mix-flower-seed", "available": true }, { "featured_image": "files/zinnia-thumbelina-mixture-flower-seed-comp.jpg", "secondary_image": "products/SeedPouch_312c84e1-434b-424c-8ce6-1ebca1e908a2.jpg", "price": 299, "handle": "zinnia-thumbelina-mixture-flower-seed", "title": "Zinnia Seeds - Thumbelina Mixture", "url": "/products/zinnia-thumbelina-mixture-flower-seed", "available": true }, { "featured_image": "files/heatwave-lettuce-mix-500mg-1-Comp.jpg", "secondary_image": "", "price": 359, "handle": "heatwave-lettuce-mix-500mg-1", "title": "Lettuce Seeds - Heatwave Mix - Organic", "url": "/products/heatwave-lettuce-mix-500mg-1", "available": false }, { "featured_image": "files/zinnia-dreamland-mixture-flower-seed-comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_fc82af52-f93b-45b9-b9a2-22e74c502d62.jpg", "price": 459, "handle": "zinnia-dreamland-mixture-flower-seed", "title": "Zinnia Seeds - Dreamland Mixture (Coated)", "url": "/products/zinnia-dreamland-mixture-flower-seed", "available": true }, { "featured_image": "files/Cosmos-Sonata-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_732be8ab-b6c7-49fe-b176-7bede5cdcf5c.png", "price": 419, "handle": "cosmos-sonata-mix-flower-seed", "title": "Cosmos Seeds - Sonata Mix", "url": "/products/cosmos-sonata-mix-flower-seed", "available": true }, { "featured_image": "files/poppy-california-mission-bells-flower-seed-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-4-oz-sm_0aedca34-181b-4050-aafd-ba8839a79822.png", "price": 299, "handle": "poppy-california-mission-bells-flower-seed", "title": "California Poppy Seeds - Mission Bells", "url": "/products/poppy-california-mission-bells-flower-seed", "available": true }, { "featured_image": "files/zinnia-seeds-pollinator-flower-mix-comp.jpg", "secondary_image": "products/MVS-generic-packet-com_2f26b9bb-ac3f-4611-af35-02118adb57f3.jpg", "price": 299, "handle": "zinnia-seeds-pollinator-flower-mix", "title": "Zinnia Seeds - Pollinator Flower Mix", "url": "/products/zinnia-seeds-pollinator-flower-mix", "available": true }, { "featured_image": "files/edible-flower-seed-mix-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-premium_99599bc5-6ead-4313-b5ca-d4f799992aa2.png", "price": 359, "handle": "edible-flower-seed-mix", "title": "Edible Flower Seed Mix", "url": "/products/edible-flower-seed-mix", "available": true }, { "featured_image": "files/grass-blend-cabin-grass-seed-mix-comp.jpg", "secondary_image": "products/non-gmo-seed-bag-sm_3e92fa42-d030-4ac5-8135-de5bfeb7b798.png", "price": 2059, "handle": "grass-blend-cabin-grass-seed-mix", "title": "Grass Mix - Cabin Grass Seed", "url": "/products/grass-blend-cabin-grass-seed-mix", "available": true }, { "featured_image": "files/wildflower-seeds-cutting-mix-organic-comp.jpg", "secondary_image": "files/Flower_1lb_cabebaba-5b29-4815-b64e-f5573645e26b.jpg", "price": 529, "handle": "wildflower-seeds-cutting-mix-organic", "title": "Wildflower Seeds - Cutting Mix (Organic)", "url": "/products/wildflower-seeds-cutting-mix-organic", "available": true }, { "featured_image": "files/pumpkin-seeds-fall-rainbow-blend-organic-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_7cb8ebfc-0a57-43cf-bc8d-842e2d658e30.jpg", "price": 359, "handle": "pumpkin-seeds-fall-rainbow-blend-organic", "title": "Pumpkin Seeds - Fall Rainbow Blend - Organic", "url": "/products/pumpkin-seeds-fall-rainbow-blend-organic", "available": false }, { "featured_image": "files/mixed_greens_braising_mix_wm_comp.jpg", "secondary_image": "files/MVS_1_lb.jpg", "price": 299, "handle": "greens-mix-seeds-braising-mix", "title": "Mixed Greens Seeds - Braising Mix", "url": "/products/greens-mix-seeds-braising-mix", "available": true }, { "featured_image": "files/Endive-Gourmet-Mix-Comp.jpg", "secondary_image": "products/Seed_Packet_fcca390f-d7be-45bc-81fa-57fb7cc60f8f.jpg", "price": 299, "handle": "endive-seeds-gourmet-mix", "title": "Endive Seeds - Gourmet Mix", "url": "/products/endive-seeds-gourmet-mix", "available": false }, { "featured_image": "files/thunbergia-alata-mix-flower-seed-Comp.jpg", "secondary_image": "products/non-gmo-sprouting-seed_f10c6f3b-1fce-4daf-b999-e0e3ad3f287b.jpg", "price": 299, "handle": "thunbergia-alata-mix-flower-seed", "title": "Thunbergia Seeds - Alata Mix", "url": "/products/thunbergia-alata-mix-flower-seed", "available": true }, { "featured_image": "products/pumpkin-mini-harvest-mix-f1-hybrid-l-com-wm.jpg", "secondary_image": "products/MVS-generic-packet-com_22acd43c-3da3-42e7-b10e-1b601d03a258.jpg", "price": 399, "handle": "pumpkin-seeds-mini-harvest-f1-mix", "title": "Pumpkin Seeds - Mini Harvest F1 Mix", "url": "/products/pumpkin-seeds-mini-harvest-f1-mix", "available": true }, { "featured_image": "products/basil-ornamental-mixture-conventional-l-com-wm.jpg", "secondary_image": "products/MVS-generic-packet-com_8981cdf9-1768-435e-8448-960e0c1dcdda.jpg", "price": 299, "handle": "basil-seeds-ornamental-mixture", "title": "Basil Seeds - Ornamental Mixture", "url": "/products/basil-seeds-ornamental-mixture", "available": true }, { "featured_image": "products/zinnia-thumbelina-mix-organic-l-com-wm.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_1030d5e3-062d-491d-9eb4-846cdf4ba385.jpg", "price": 359, "handle": "zinnia-seeds-thumbolina-mix-organic", "title": "Zinnia Seeds - Thumbelina Mix (Organic)", "url": "/products/zinnia-seeds-thumbolina-mix-organic", "available": true }, { "featured_image": "files/linaria-spurred-snapdragon-seeds-Comp.jpg", "secondary_image": "products/Seed_Pouch_1_1_1_572224ef-41ed-4e4c-a536-2d7ba1faab48.jpg", "price": 299, "handle": "linaria-spurred-snapdragon-seeds", "title": "Linaria Seeds - Spurred Snapdragon", "url": "/products/linaria-spurred-snapdragon-seeds", "available": true }, { "featured_image": "products/kale-garden-blend-organic-l-com-wm.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_4452eede-9d11-4f05-8546-01421056d5f5.jpg", "price": 359, "handle": "kale-seeds-garden-blend-organic", "title": "Kale Seeds - Garden Blend - Organic", "url": "/products/kale-seeds-garden-blend-organic", "available": true }, { "featured_image": "files/cosmos-seeds-dwarf-sensation-mix-organic-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_f713f68a-8acb-4fd8-9009-e3395594d5eb.jpg", "price": 399, "handle": "cosmos-seeds-dwarf-sensation-mix-organic", "title": "Cosmos Seeds - Dwarf Sensation Mix - Organic", "url": "/products/cosmos-seeds-dwarf-sensation-mix-organic", "available": false } ]
%HHours
%MMinutes
%SSeconds
%-dDays
%HHours
%MMinutes
%SSeconds
%-wWeeks
%-dDays
%HHours
%MMinutes
%SSeconds
%HHours
%MMinutes
%SSeconds
%-dDays
%HHours
%MMinutes
%SSeconds
%-wWeeks
%-dDays
%HHours
%MMinutes
%SSeconds
//store.trueleafmarket.com/cdn/shop/t/54/assets/favicon-dark.webp?v=99523036855073563661712858117 //store.trueleafmarket.com/cdn/shop/t/54/assets/option-a.js?v=321251 //store.trueleafmarket.com/cdn/shop/t/54/assets/option-b.js?v=321251 Back to top