How to Grow Red Cabbage Microgreens
Brassica oleracea var. capitata
Red Cabbage Microgreens offer a vibrant pop of color and intense peppery flavor to salads and sandwiches. Gardeners prize them for their rapid growth cycle and high nutrient density packed into small spaces.
Starting Red Cabbage Microgreens: indoors or direct sow?
🏠 Start indoors 4 weeks before your last spring frost, then move the seedlings outside.
Since this is a microgreen variety intended for harvest within two months, seedlings are typically grown indoors from start to finish rather than being transplanted outdoors.
Soil, care & harvest
Prepare a shallow tray with moist, sterile soil adjusted to a pH between 5.5 and 6.5. As a cool-season crop, sow seeds indoors 2-6 weeks before your last spring frost date. Scatter the dense seeding evenly across the surface without covering them deeply, as they require light for germination which typically occurs within 3-5 days.
Keep the growing medium consistently moist by misting regularly to avoid waterlogging. Do not add fertilizer or mulch during this short microgreen cycle, and no trellising is needed since these plants remain low-growing. Maintain temperatures typical for brassicas to encourage steady, healthy development until maturity.
Watch for flea beetles, aphids, and fungus gnats; prevent issues by ensuring clean conditions and good air circulation. Damping off is a risk if the soil stays too wet, so avoid overwatering. Harvest your crop at 68 days after sowing when leaves are fully developed, cutting them just above the soil line with scissors.
When to Plant Red Cabbage Microgreens
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | January – December | — | January – December |
| Zone 2 | January – December | — | January – December |
| Zone 3 | January – December | — | January – December |
| Zone 4 | January – December | — | January – December |
| Zone 5 | January – December | — | January – December |
| Zone 6 | January – December | — | January – December |
| Zone 7 | January – December | — | January – December |
| Zone 8 | January – December | — | January – December |
| Zone 9 | January – December | — | January – December |
| Zone 10 | January – December | — | January – December |
| Zone 11 | January – December | — | January – December |
| Zone 12 | January – December | — | January – December |
| Zone 13 | January – December | — | January – December |
Companion Plants for Red Cabbage Microgreens
✓ Good companions
Compatible root zones and carrots help break up soil for better cabbage root development
Improves soil health and may enhance growth and flavor of brassicas
Repel aphids and other soft-bodied insects while improving soil with their root system
Attracts beneficial insects and may enhance cabbage flavor while repelling cabbage worms
Compatible growing conditions and helps maximize space utilization without competition
Deter aphids, whiteflies, and nematodes while attracting beneficial predatory insects
Act as trap crops for aphids and flea beetles, drawing pests away from cabbage
Repel cabbage moths, aphids, and other brassica pests with their strong sulfur compounds
✗ Keep away from
Can overshadow microgreens and compete for nitrogen despite being nitrogen-fixers
Compete for nutrients and may stunt brassica growth through root competition
May inhibit cabbage growth and both plants compete for similar nutrients
Nutrition Facts
Per 100g serving (USDA FoodData Central)
