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.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Leafy Greens Seed Assortment - 7 Pack
Everyone knows that leafy greens are packed with essential nutrients. This collection goes beyond that to show that they can be beautiful and flavorful. From spicy arugula to tender lettuce,...
Mustard Seeds - Misome Hybrid
30 days to maturity. Brassica campestris Narinosa group. Misome Hybrid Mustard Seeds. Non-GMO, warm-season, annual, hybrid. A relatively recent hybrid between Komatsuna and Tatsoi, this versatile, uniform, and hardy green...
Mustard Seeds - Mizuna Red Streaks
45 days. 20 days for baby leaf. With a mild peppery mustard flavor, this green is great for salads as a baby green or a full-size green. The stalk has...
Mustard Seeds - Japanese Red Giant
60-80 days. Brassica juncea var. rugosa. Japanese Red Giant Mustard Seeds. Non-GMO. Annual. Exceptionally broad-leafed and textured, Red Giant (Aka taka-na) is a Japanese mustard green specifically grown for its...
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...
Valerian Seeds
60+ Days to maturity. Valeriana officinalis. Valerian. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in garden plots, raised beds, containers, and fields. Resistant to deer. A tall, elegant perennial known...
Tobacco Seeds - Golden Burley
~60-65 Days from transplant to maturity. Nicotiana tabacum. Golden Burley Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to...
Tobacco Seeds - Sacred Wyandot
~35 Days from transplant to maturity. Nicotiana rustica. Sacred Wyandot Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to...
Herb Seed Assortment - Scarborough Fair
The Scarborough Fair Culinary Herb Seed Collection is directly inspired by the traditional English ballad, "Scarborough Fair" later popularized by folk rock duo, Simon & Garfunkel. This herb kit assortment...
Chervil Seeds - Curled
Non-GMO, Heirloom Curled Chervil Garden Seed from True Leaf Market. Anthriscus cerefolium. These hardy annual herbs produce as a cool season crop and originate from Southeast Europe and West Asia....
Basil Seeds - Thai (Organic)
60-90 Days to maturity. Ocimum basilicum thyrsiflora. Organic Thai Basil Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. On the...
Amaranth Seeds - Red Leaf - Hu Hsien
45-70 days to maturityAmaranthus tricolor ‘Hu Hsien’. Red Leaf Amaranth Seeds. Non-GMO, Heirloom. Annual. Amaranth is originally from the tropics of multiple continents; today, it is grown globally. The plant...
Basil Seeds - Dwarf Greek
Non-GMO, Open-pollinated, Heirloom Dwarf Greek Basil Herb Seed from True Leaf Market. Ocimum basilicum. As basil has many different varieties, Dwarf Greek Basil Herb is one of the smaller, ancient...
Parsley Seeds - Plain or Single
70-80 Days to maturity. Petroselinum crispum. Plain or Single Parsley Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Plain or Single...
Japanese Mugwort - Yomogi
45 Days to maturity. Artemisia princeps. Yomogi Japanese Mugwort Seeds. Non-GMO perennial heirloom. Yomogi, or Japanese Mugwort, is an easy-to-grow perennial herb that grows in almost any condition. It is...
Basil Seeds - Mammoth
60-90 Days to maturity. Ocimum basilicum. Mammoth Basil Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Mammoth basil is a...
Rosemary Seeds (Organic)
120-180 Days to maturity. Salvia rosmarinus. Organic Rosemary Seeds. Non-GMO, organic, open-pollinated, heirloom, perennial herb. Rosemary is a popular culinary aromatic herb that can be grown in garden plots and...
Tobacco Seeds - Florida Sumatra
~55 Days from transplant to maturity. Nicotiana tabacum. Florida Sumatra Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to...
Shiso Seeds - Red (Organic)
80-85 Days to maturity. Perilla frutescens. Red Shiso Herb Seeds. Non-GMO, organic, annual. Shiso is grown as an annual herb with a distinct flavor often described by people as similar...
Tobacco Seeds - American 572
70-80 Days from transplant to maturity. Nicotiana tabacum. American 572 Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to...
Mustard Seeds - Old Fashioned
B. juncea (42 days) Old Fashioned Mustard is the classic mustard typically found in Southern gardens of yesteryear. It is still widely grown in the South for its reliability and...
Chinese Mustard Seeds - Shuidong
35 to 45 Days to maturity. Brassica juncea. Shuidong Chinese Mustard Seeds. Non-GMO, Heirloom, non-GMO, Cool Season Annual. Shuidong mustard is named after the town where it was first cultivated,...
Borage Seeds (Organic)
60-70 Days to maturity. Borago officinalis. Organic Borage Seeds. Non-GMO, annual, open-pollinated, heirloom herb. Borage is commonly referred to as a starflower due to its beautiful, star-shaped blue flowers. This...
The True Leaf Market Herb Growing Guide
Get the True Leaf Market Herb 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...
Lavender Seeds - Spike
100+ Days to maturity. Lavandula latifolia. Spike Lavender Seeds. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, and raised beds. Spike Lavender is a sun-loving, aromatic...
Corn Salad Seeds - French
40 days. Valerianella olitoria. French Corn Salad Seeds. Non-GMO, annual, open-pollinated. This crop is suitable for garden plots, raised beds, and containers. French corn salad, also known as mache or...
Licorice Seeds
2-3 years to maturity. Glycyrrhiza glabra. Variety Type Seeds. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, and raised beds. Bring an ancient healing plant into your herb...
Burdock Seeds - Gobo Takinogawa
85-95 days to maturity. Arctium lappa ‘Gobo Takinogawa’. Gobo Takinogawa Burdock Seeds. Heirloom, Non-GMO, Annual, Open-pollinated. Burdock has been grown for centuries, primarily in China and Japan, for its culinary...
Spinach Seeds - Carmel Hybrid
40 days. Spinacia oleracea. Carmel Hybrid Spinach Seeds. Non-GMO, annual, F1 hybrid. This crop is suitable for garden plots, raised beds, and containers. Carmel is a fast-growing, very uniform hybrid...
Basil Seeds - Purple Ruffles
Non-GMO, Heirloom Purple Ruffles Basil Herb Seed from True Leaf Market. Ocimum basilicum x purpurascens. As basil has many different types, Purple Ruffles Basil is a sweet cultivar that grows...
Medicinal Herb Storage Seeds
Open Pollinated NON-GMO Heirloom Medicinal Garden Pack The best preparation is practice so Mountain Valley Seed Co. has developed the Grow and Store line to get you prepared and growing....
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