Mustard Plant Seeds – Where to Buy & How to Plant Them

Mustard Plant Seeds – Where to Buy & How to Plant Them

About Mustard Plant

Mustard plant seeds are an annual flowering plant from the Brassica family. Mustard plants are native to the Mediterranean region and have been cultivated for thousands of years.

Mustard plants require well-draining soil and full sun to thrive; they are easy to grow from seed and are relatively drought-tolerant. Mustard plant seeds can be planted directly into the ground or started indoors.

When the seedlings reach 4-6 inches in height, they should be thinned to 1-2 feet apart. The flowers of mustard plants range in color from yellow to white and will produce seeds after they have been pollinated.

Mustard plant seeds can be harvested in the fall and used in cooking or ground into a powder to make mustard. Mustard plants are also a great source of nutrition, containing high amounts of vitamins A, C, and E.

Where to Buy Mustard Plant Seeds (Top 3 Picks)

Eden Brothers

Price: $3.95

True Leaf Market

Price: $4.14


Price: $3.95

Mustard Plant Seeds Germination Instructions

  1. Soak mustard seeds in warm water for 12 to 24 hours before planting.
  2. Fill a seed tray or pot with a potting mix. Use a well-draining soil mix and keep the soil moist but not soggy.
  3. Sow the mustard plant seeds, spacing them approximately 1 inch apart.
  4. Cover the seeds lightly with soil, making sure they are not buried too deep.
  5. Water the soil lightly, using a spray bottle.
  6. Place the seed tray or pot in a warm, sunny location.
  7. Keep the soil moist and warm, but not wet.
  8. The seeds should germinate within 7 to 10 days.
  9. When the seedlings have at least two sets of true leaves, thin them out, leaving only the strongest plants.
  10. Transplant the seedlings into larger pots or your garden.
  11. Water and feed the young plants as needed.
  12. Once the seedlings are established, fertilize them monthly with a balanced fertilizer.

Related: How To Make Banana Water For Plants – (The Best Organic Fertilizer)

Best Soil & Container For Mustard Plant Seeds

The best soil for mustard plant seeds is loose, well-draining soil with a pH of 6.0-7.5. Mustard plants also prefer soils rich in organic matter such as compost, manure, or peat moss. Make sure to keep the soil moist but not soggy for the best results.

A seed-starting tray with a lid is the best container for mustard plant seeds. The lid will help to keep the humidity level high and the soil moist, which will provide the proper environment for the mustard plant seeds to germinate. Additionally, the tray will also provide drainage to help keep the soil from becoming waterlogged.

Temperature & Light Requirements For Mustard Plant Seeds

Mustard plant seeds typically require a soil temperature of at least 60°F (15°C) for successful germination. The ideal soil temperature for mustard plant seed germination is 70°F (21°C). If the soil temperature is too cold, the mustard seeds may take longer to germinate.

Mustard plants are relatively easy to grow and do not require an excessive amount of sunlight. They prefer full sun but can tolerate partial shade. It is good to ensure that your mustard plant seeds receive at least 4-6 hours of direct sunlight per day. If you are growing mustard plants indoors, use a grow light to provide the necessary light.

Pest & Diseases for Mustard Plant


  • Aphids
  • Flea Beetles
  • Cutworms
  • Cabbage Loopers
  • Grasshoppers
  • Cucumber Beetles


  • Downy Mildew
  • Alternaria Leaf Spot
  • White Rust
  • Black Rot
  • Powdery Mildew
  • Verticillium Wilt


How do mustard seeds grow?

Mustard seeds are grown from mustard plants, which are annuals with bright yellow flowers. The mustard plant has a long taproot which is used to access water and nutrients from the soil.

The seeds are small, round, and black or brown in color. To grow the mustard plant, the seeds should be sown directly into the soil in the late spring or early summer.

The soil should be well-drained and kept moist throughout the growing season. The plants should be thinned to about 8-10 inches apart.

The mustard plant will grow quickly and produce flowers in about 3-4 weeks. The flowers will then form small seed pods which will mature in about 6 weeks. The pods can be harvested when the pods turn light brown and begin to crack open. The mustard seeds can then be collected and used for cooking or planting.

When to plant mustard greens?

Mustard greens prefer cooler temperatures and can be planted in the spring as soon as the soil can be worked. They can also be planted in late summer for a fall harvest.

Where are mustard seeds grown?

Mustard seeds are primarily grown in countries such as India, Pakistan, Canada, China, and the United States.

Do mustard seeds grow into trees?

No, mustard seeds do not grow into trees. Mustard plants are annual plants, meaning they only grow for one year before they die.

When to plant mustard greens in Louisiana?

Mustard greens can be planted in Louisiana from early spring until early summer. The best time to plant mustard greens in Louisiana is from late March to early May.

When to plant mustard greens in Texas?

Mustard greens can be planted in Texas any time from mid-fall to early spring. Planting in the fall will produce a sweeter crop due to the cooler temperatures. Planting in the spring will produce a more pungent crop due to the warmer temperatures. The best time to plant will depend on the desired flavor of the crop.

When to plant mustard greens in Georgia?

Mustard greens can be planted in Georgia during the cooler months of the year, from September to May. Planting in late September or early October will give you a head start on the growing season.

When to plant mustard greens in zone 7?

Mustard greens can be planted in zone 7 in either the early spring or the late fall. For a spring planting, seeds should be sown as soon as the soil can be worked in late February or early March. For a fall planting, seeds should be sown in August or September.

When to plant mustard greens in zone 8?

Mustard greens can be planted in Zone 8 starting in early spring, as soon as the soil is workable. Sow the seeds directly into the soil, 1/2 inch deep, and spaced 4-6 inches apart. For a continuous harvest, sow seeds every two weeks until late fall.

How many mustard seeds are needed to make mustard?

It depends on the recipe and the desired flavor, but typically between 1 and 2 tablespoons of mustard seeds are needed to make mustard.

How many mustard seeds per plant?

Mustard plants typically produce between 1,000 and 3,000 mustard seeds per plant.


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