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]()
Broccoli - Waltham 29 - Microgreens Seeds
8-12 days. Broccoli makes an excellent microgreen, as it is one of the easiest crops to grow. It has a deliciously mild, fresh brocolli or cabbage flavor and makes a...
Pea - Speckled (Organic) - Microgreens Seeds
8-14 days. Speckled peas are particularly fine for pea shoot production. We only stock seeds with high germination rates so these tasty Organic peas can be sprouted or grown into...
Basic Salad Mix - Microgreens Seeds
8-12 days. A flavorful and colorful combination of microgreens that grow well together and can be harvested at 10 days. Contains conventional seed types of: Broccoli, Kale, Kohlrabi, Arugula &...
Sunflower - Black Oil - Microgreens Seeds
Non-GMO Black Oil Sunflower Seeds. Shell On (Whole), Non-GMO. Open Pollinated. Helianathus Annus. 8-12 Days for mature, delicious microgreens. Black Oil sunflower seeds are some of the best seeds for...
Spicy Salad Mix - Microgreens Seeds
8-12 days. A flavorful and colorful combination of microgreens that grow well together and can be harvested at 10 days. Contains: Broccoli, Kale, Kohlrabi, Arugula, Red Cabbage & Mustard for...
10 x 20 Growing Trays WITHOUT Holes
Large 1020 growing trays with NO drain holes. Perfect as a drip tray for trays with holes, or a growing tray for hydroponic applications. Approx 20"x10". Standard nursery plant growing...
Arugula - Slow Bolt - Microgreens Seeds
6-8 days. Slow Bolt Arugula is easy to grow and grows fast as a microgreen. It's a favorite and generally considered a staple of the spicier side of microgreens and...
Kale - Red Russian - Microgreens Seeds
8-12 days. Check out this vibrant kale microgreen with dark green leaves and variegated stems of pink, floral purple, and at times, bright red. It has a consistent flavor compared...
Amaranth - Red Garnet - Microgreens Seeds
8-12 days. Red Garnet Amaranth is a high-protein microgreen with stunning red and magenta tones. This heirloom variety can be used in salads or many oriental dishes. Amaranth - Red...
Pea - Dun - Microgreens Seeds
8-14 days. Dun Pea micro greens are one our all-time favorite microgreens! The pea shoots are sweet and delicious and fairly straight and leafy. They make a great garnish or...
10 x 20 Growing Trays WITH Drain Holes
Durable black plastic growing trays/flats. These growing trays do have drain holes. Nestable in 1020 trays with no holes. Use for Hydroponic or Soil growing. Approx: 20" by 10". Find...
Pea - Green (Organic) - Microgreens Seeds
8-14 days. Green Pea microgreens are a staff favorite here at True Leaf! The tendrils add a unique texture while the stems have the same familiar crunch and sweet flavor...
Cilantro - Slow Bolt - Microgreens Seeds
21-28 days. This slow-bolting strain is grown primarily for its broad, deep green, celery-like, pungent foliage. As a microgreen, these seeds take time but are well worth it, not only...
Basil - Genovese - Microgreens Seeds
12-16 days. Use micro basil in place of regular basil in any recipe, for extra intense basil flavor. Micro basil pesto is amazing. Keep damp with regular misting until sprouted...
Mini Microgreens Growing Kits (Organic)
These single serve mini microgreens kits are a fun and inexpensive way to start growing microgreens for sandwiches, salads and garnishes. Choose from Radish, Arugula, Sunflower, Red Streaks Mizuna Mustard,...
10 x10 Growing Trays WITHOUT Drain Holes
10x10 inch growing trays without drain holes (1010). Half the size of our 1020 plant-growing trays / flats. Works well as drip tray, or for growing wheatgrass, microgreens and other...
Swiss Chard - Ruby Red - Microgreens Seeds
11-21 days. A mild delicate spinach flavor and amazing red stem color. Makes an excellent choice to add to any micro mix for earthy flavor and striking color. Select a...
10 x10 Growing Trays WITH Drain Holes
1010 Growing Trays with Drain Holes: 10" x 10". These growing trays work great for pet grass, or for smaller quantities of wheatgrass or barley grass at a time. Also...
Kohlrabi - Purple Vienna - Microgreens Seeds
8-12 Days to maturity. Brassica oleracea var gongylodes. Purple Vienna Kohlrabi Microgreen Seeds. Try adding these as the base of a microgreen salad. Their mild cabbage flavor, paired with colorful...
Carrot - Microgreens Seeds
14-20 days. Carrots can be grown as microgreens. The green top when in microgreen stage has a delightful flavor of mild sweet carrot. The texture is like dill, without any...
Nasturtium - Jewel Mix - Microgreens Seeds
14-16 days. Nasturtium microgreen seeds pack a powerhouse of flavor when in the microgreen stage. They have beautiful variegated colors, especially in this Jewel Mix. Also known as nasturtium shoots,...
Cilantro Seeds - Leisure Splits - Microgreens Seeds
Non-GMO. Coriandrum sativum. This split seed has had the individual seeds separated from the multi-seed pods in which they grow naturally. Sometimes called 'monogerm cilantro', these seeds are better for...
Beet - Bulls Blood - Microgreens Seeds
11-21 days. Beets are a more advanced microgreen but well worth the effort because of its stunning color and bold flavor. It takes a bit more time to mature, but...
Radish - Rambo (Organic) - Microgreens Seeds
6-10 days. Organic Rambo Radish is another striking radish that boasts the same wonderful dark cotyledons as Sango radish. The rosy stems and bright floral flavor add both a tasty...
Cabbage - Red Acre - Microgreens Seeds
6-14 days. Red Acre Cabbage microgreens grow petite red and violet stems with variegated shades of green leaves. A very popular seed to add to microgreen mixes. Pairs well with...
Radish - Rambo - Microgreens Seeds
6-10 days. Rambo radish is another striking radish that boasts the same wonderful dark cotyledons as Sango radish. The rosy stems and bright floral flavor add both a tasty and...
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