Daikon Radish Seed (Oilseed) (lb)

Raphanus sativus develops the oversized taproot that gives daikon radish its reputation as a biological soil-working crop. As the root pushes downward, it creates channels through dense ground that can improve the movement of water and air. After the plant dies or is terminated, the decomposing root leaves openings that following crop roots can explore.

Daikon is a fast cool-season broadleaf in the mustard family. It germinates quickly in suitable moisture, produces leafy surface growth, and reaches maturity in approximately 40–45 days. That speed makes it useful in short spring or fall planting windows when there is not enough time for a slower cover crop. The foliage adds organic matter and, if allowed to flower, can attract beneficial insects.

Seed into a prepared bed where the root can grow downward without competing with a dense established sod. The most dramatic taproot development occurs when plants have enough space, moisture, and fertility to grow actively. Terminate before mature seed develops if volunteer radishes are not wanted. In cold climates, winter-killed roots may decompose in place; in milder regions, mowing or incorporation may be needed. Daikon is a brassica rather than a legume, so it does not require Rhizobium inoculant.

• Scientific Name: Raphanus sativus
• Growth Cycle: Fast-growing cool-season annual brassica
• Application Rate: 5–20 lb per acre or approximately 1 lb per 1,000 sq ft
• Inoculant: Not required. This is a nonlegume cover crop and does not rely on Rhizobium bacteria for nitrogen fixation.
• Germination: Approximately 7–14 days under suitable conditions
• Plant Height: Approximately 24–36 inches
• Days to Maturity: Approximately 40–45 days
• Uses: Creating root channels, improving water penetration, capturing nutrients, producing organic matter, and attracting beneficial insects
• Planting Window: Early spring or fall
• Management: Terminate before mature seed develops unless natural reseeding is desired