Mustard Greens Seeds - Feaster Family


Brassica juncea

Stewarded by Jerome Feaster, whose family has grown this variety for nearly 100 years on the same farm near Shiloh in rural Marion County, Florida. Mr. Feaster donated seeds to Seed Savers Exchange for preservation, and we are happy to also now offer this delicious, spicy variety that holds well into spring in the south, and early summer in the north. Large, slightly crinkled leaves will grow up to 2' long and are a lovely, soft green color. Nice and spicy! We love these greens cooked in some nice fat with a bit of vinegar to help cool the heat. Thanks to Working Food Gainesville for introducing us to this wonderful variety!

  • Planting Information
  • How to Grow
  • Seed Saving


Average Seed / ozSeed / 100' RowAverage Yield / 100' RowDays to Harvest
150003 grNA40-60
Planting SeasonIdeal Soil TempSunFrost Tolerance
All60-85°FFull/PartModerately Tolerant
Sowing MethodSeed DepthDirect Seed SpacingSeeds Per Packet
Transplant or Direct Seed1/4"1"1000 seeds
Mature SpacingDays to SproutProduction CycleSeed Viability
4-8"3-12Biennial4-5 years

Mustard greens grow best in moist, rich soil. To prepare the soil for planting, spread compost over the planting area, about 3 to 6 inches thick. Carefully turn the compost into the ground with a digging fork, loosening the soil.
Mustard greens thrive in cooler temperatures but do not grow well in summer. Aim to start seeds about four weeks before the last frost. The plants can tolerate frost, which actually contributes to a sweeter flavor to the greens and make them a tasty addition to your fall garden plantings, too.
Plant seeds just under the soil, about a half an inch apart. Once the seedlings sprout and grow their first leaves, gently unearth them and pull them apart into clumps. Replant the seedlings approximately 12 inches apart. While this replanting of the seedlings is not necessary, doing so will allow greens to grow faster and yield more.
Alternatively, you can start your seeds in pots inside for transplanting out, and in this case aggressive thinning isn’t needed. 
Mustard greens require at least 1 inch, preferably 2 inches of water per week to thrive. Factoring in rainfall, make sure that they receive adequate hydration. Be sure to keep the soil evenly and consistently watered.
Carefully remove any weeds you see growing around your plants. While mustard greens do not require a lot of room to grow, the influx of weeds can cause unnecessary disturbance, particularly to fragile seedlings. To remove weeds, softly dig them out with your hands.
Mustard greens should be harvested when the leaves are still young and tender; older leaves will have a bitterer flavor. You can start to pick the leaves after 4 weeks, when they should be about 3 to 6 inches long. You can harvest greens by snipping off outer leaves from the plant, and then leaving it to continue growing. Alternatively, you can unearth the entire plant and harvest all of the leaves at once.

Mustard Greens, Brassica spp.
Pollination, insect; Life Cycle, annual; Isolation Distance, ½ mile
Although mustard will not cross with other Brassicae, there are many wild mustards in both the Brassica juncea (the greens we eat) and Brassica nigra (the seeds we eat) that grow all over North America that your seed plants will cross with. Isolation by space can be risky for this reason, a safer bet would be to bag your flowers or cage your plants. The seed pods mature from the bottom upwards and shatter easily, so it's best to cut the whole plant just before maturity and hand to dry in a cool, dry place. When whole plant is crispy-dry, thresh the seeds and winnow to clean.