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Cold Winter Areas — Zones 1–7a

April is the bridge between the indoor seed-starting season and the first real outdoor planting in cold-winter zones. As soon as soil is workable, focus on bed prep, clearing winter cover, and making space for early direct sowing of hardy spring crops — often with row cover or low tunnels to buffer cold nights. Indoors, keep starting and potting up seedlings, and begin hardening off the earliest transplants on mild days so they are ready to go out as soon as your local frost window allows.

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: Lettuce, cauliflower, dill, marigold, eggplant, tomato, pepper, zinnia

Transplants to move outdoors (weather permitting — harden first): Onion, parsley, broccoli, cabbage, kohlrabi, arugula, pansy, bachelor's buttons

Crops that can be directly sown outdoors in April (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 replaces 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.

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
353 Items
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Chinese Cabbage Seeds - Vitaminna
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Lettuce Seeds - Romaine - Silviasmall size packet type seed packaging for - Lettuce Romaine Silvia
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Pea Seeds - Snap - Sugar Snap (Organic)
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Mustard Ruby Streakmid size pouch type seed packaging for - Mustard Ruby Streak
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Lettuce Seeds - Amish Deer Tongue - OrganicLettuce Seeds - Amish Deer Tongue - Organic
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Lettuce Seeds - Arianna - Organicsmall size packet type seed packaging for - Lettuce Arianna Organic
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Turnip Seeds - Nozawanamid size pouch type seed packaging for - Turnip Nozawana
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Lettuce Seeds - Crisphead - New York 12small size packet type seed packaging for - Lettuce Crisphead New York 12
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Lettuce Seeds - Spring Tower Celtucemid size pouch type seed packaging for - Lettuce Spring Tower Celtuce
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Lettuce Seeds - Spring Tower Celtuce
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Mustard Seeds - Jeok Gatmid size pouch type seed packaging for - Mustard Jeok Gat
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Mustard Seeds - Jeok Gat
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Mustard Seeds - Yanagawa Takanamid size pouch type seed packaging for - Mustard Yanagawa Takana
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Mustard Seeds - Yanagawa Takana
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Pea Seeds - ParsleyPea Seeds - Parsley
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Starting at $2.99
Mustard Seeds - Chirimen HakarashiMustard Seeds - Chirimen Hakarashi
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Mustard Seeds - Chirimen Hakarashi
Starting at $3.99
Chinese Cabbage Seeds - Maruba Santoh Round
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Chinese Cabbage Seeds - Maruba Santoh Round
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Lettuce Seeds - Butterhead - Butter Kingsmall size packet type seed packaging for - Lettuce Butterhead Butter King
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Lettuce Seeds - Merveille Des Quatre Saisons - Organicsmall size packet type seed packaging for - Lettuce Merveille Des Quatre Saisons Organic
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Lettuce Seeds - Ashley - Organicsmall size packet type seed packaging for - Lettuce Ashley Organic
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Lettuce Seeds - Leaf - Ashleysmall size packet type seed packaging for - Lettuce Leaf Ashley
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Mustard Seeds - Tsa Tsai Roundmid size pouch type seed packaging for - Mustard Tsa Tsai Round
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Lettuce Seeds - Leaf - Merlot (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Mustard Seeds - Miike Giantmid size pouch type seed packaging for - Mustard Miike Giant
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Lettuce Seeds, Romaine - Silvia - Organicsmall size packet type seed packaging for - Lettuce Romaine Silvia Organic
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Kale Seeds - Garden Blend - Organicsmall size packet type seed packaging for - Kale Garden Blend Organic
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Lettuce Seeds - Batavian, Great Lakes 118 - Organicsmall size packet type seed packaging for - Lettuce Batavian Great Lakes 118 Organic
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Mustard Seeds - Tat Soi - Black Knight - Organic
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Mustard Seeds - Osaka Purple - Organic
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Chinese Cabbage Seeds - Hiroshimanamid size pouch type seed packaging for - Chinese Cabbage Hiroshimana
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Lettuce Seeds - Leaf - Red Velvetsmall size packet type seed packaging for - Lettuce Leaf Red Velvet
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Lettuce Seeds - Romaine - Sweet Valentinemid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Pak Choi Seeds - Shanghai - Microgreens Seeds
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Lettuce Seeds - Butterhead - Burgandy Boston
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Turnip Seeds - Seven Top (Organic)
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