March is the month when most gardens really wake up. In colder regions, it is prime time for indoor seed starting and preparing beds. In milder climates, spring planting is already rolling, and in the warmest zones, the garden may be producing heavily while you begin shifting toward heat-loving crops.
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 settles.
Zones 7b-9a: These zones experience mild winter weather and are warming quickly in March. Many cool-season crops can be direct sown outdoors, and succession planting helps keep harvests coming as temperatures rise. It is also a great time to start warm-season favorites indoors while keeping frost protection on hand for unexpected cold snaps. And of course, sprouts and microgreens are always in season indoors!
Zones 9b-12: Depending on your area, March can be peak garden season in these warm-winter zones. Many crops planted earlier are now producing, and this month often marks the transition from late cool-season planting to the start of warm-season gardening. In the hottest areas, you may begin planting heat lovers while timing your last rounds of tender cool-season crops before warmer weather arrives.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
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...
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...
Plantain Seeds - Boston
60-90 Days to maturity. Plantago lanceolata. Boston Plantain Herb and Cover Crop Seeds. Non-GMO, cool-season perennial, open-pollinated, forage friendly (cattle and sheep). Boston plantain is a narrow-leaf type of plantain...
Milk Thistle Seeds
80-100 Days to maturity. Silybum marianum. Milk Thistle Seeds. Non-GMO, annual or biennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, and raised beds. Milk thistle is a...
Organic Heirloom Variety - 16 Pack
This assortment of garden seeds takes the hassle out of planning a garden. Each professionally packaged pack of seeds is filled with plenty of high-germination, current crop year vegetable garden...
Basil Seeds - Red Rubin
Non-GMO, Open-pollinated Red Rubin Basil Herb Seed from True Leaf Market. Ocimum basilicum x purpurascens. As basil has many different types, Red Rubin Basil is a sweet cultivar and hybrid...
Lavender Seeds - Hidcote Blue
100+ Days to maturity. Lavandula angustifolia. Hidcote Blue Lavender Seeds. Non-GMO, perennial, open-pollinated. Suitable for growing in fields, containers, garden plots, and raised beds. Experience the classic beauty and sweet...
Fenugreek Seeds
Non-GMO, Open Pollinated. Heirloom Fenugreek Herb Garden Seed from True Leaf Market. Trigonella foenum-graecum. Fenugreek is a warm fast-maturing annual that's been used as an incense dating back to Ancient...
Mustard Seeds - Osaka Purple
21 to 45 days. An outstanding mustard of dark green-purple leaves with bright white veins. Harvest at 4 to 6 inches for salad or allow it to grow to full...
Caraway Seeds
455 Days to maturity (2nd year). Carum carvi. Caraway Seeds. Non-GMO, open-pollinated, heirloom, biennial herb seed. Attracts pollinators and is both cold and drought-tolerant once established. Caraway is an attractive...
Parsley Seeds - Plain or Single (Organic)
70-80 Days to maturity. Petroselinum crispum. Organic Plain or Single Parsley Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Plain...
Lavender Seeds - Munstead
126-140 Days to maturity. Lavender angustifolia. Munstead Lavender Seeds. Heirloom, Non-GMO, Open Pollinated. Perennial. A fragrant robust lavender that, due to its short size and tightly held blooms (about 8...
Amaranth Seeds - Green Leaf - Lu Hsien
45-70 days to maturity.Amaranthus mangostanus ‘Lu Hsien’. Lu Hsien Green Leaf Amaranth Seeds. Non-GMO, Heirloom, annual. Amaranth is originally from the tropics of multiple continents; today, it is grown globally....
Mustard Seeds - Spinach (Komatsuna) - Tendergreen
45 days. Mustard-Spinach or Komatsuna. Milder than regular mustard greens, this variety has thick, smooth leaves on upright, heat and cold tolerant plants. Tendergreen is widely used both in stir...
Paracress Seeds - Toothache Plant
120-130 Days to maturity. Acmella oleracea. Toothache Plant Paracress Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in containers, garden plots, raised beds, flower borders, and greenhouses. Toothache Plant Paracress...
Nicotiana Seeds (Ornamental Tobacco} - Jasmine
70+ Days to maturity from transplant. Nicotiana alata. Jasmine Nicotiana Ornamental Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in containers, garden plots, flower borders, and greenhouses. Jasmine Nicotiana...
Mustard Seeds - Florida Broadleaf
48 days. One of the first greens of the season. This 10 inch mustard has small, bright green, broad leaves with white midribs. A vigorous growing plant that is high...
Basil Seeds - Thai Sweet Large Leaf
35-40 Days to maturity. Ocimum basilicum. Sweet Large Leaf Thai Basil Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. A...
Basil Seeds - Red Leaf Holy Basil
65-75 days maturity. Ocimum sanctum. Red Leaf Holy Basil Seeds. Non-GMO, Heirloom. Annual. Holy basil is an essential herb in the Thai kitchen due to its unique flavor. This Holy...
Tobacco Seeds - Tennessee Red Leaf
~60-65 Days from transplant to maturity. Nicotiana tabacum. Tennessee Red Leaf Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant...
Tobacco Seeds - Black Sea Samsun
55–65 Days from transplant to maturity. Nicotiana tabacum. Black Sea Samsun Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant...
Basil Seeds - Cinnamon
Non-GMO, Open-pollinated, Heirloom Cinnamon Basil Herb Seed from True Leaf Market. Ocimum basilicum. As basil has lots of different varieties, Cinnamon Basil Herb is one of the most popular sweet...
Fenugreek (Organic) - Herb Seeds
Non-GMO, Open Pollinated. Heirloom Organic Fenugreek Herb Garden Seed from True Leaf Market. Trigonella foenum-graecum. Organic Fenugreek is a warm fast-maturing annual that's been used as an incense dating back...
Cress Seeds - Curled (Organic)
Non-GMO, Heirloom Organic Curled Cress Herb Garden Seed from True Leaf Market. Lepidium sativum. Cress is native to Persia, which is known as West Asia. Organic Curled Cress is herbaceous...
Amaranth Seeds - Polish - Organic
Certified Organic by Oregon Tilth. 250 mg packet. Amaranthus. 60 days to maturity. From Wisconsin farmer Richard DeWild. This amaranth is one of the best tasting amaranth varieties we sell....
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,...
Parsley Seeds - Triple Moss Curled
70-80 Days to maturity. Petroselinum crispum. Triple Moss Curled Parsley Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Triple Moss Curled...
Parsley Seeds - Italian Giant
70-80 Days to maturity. Petroselinum crispum. Italian Giant Parsley Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Italian Giant parsley brings...
Garlic Bulbs - Fall - Hardneck - German Red
3 Bulbs Per Bag Shipping Now! This product only ships to the lower 48 states. No shipping outside the USA. Approximately 290 Days to Maturity (Mid Summer). Allium sativum var....
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