How to Grow Broccoli Microgreens
Brassica oleracea
Broccoli microgreens offer a nutrient-dense, rapid harvest for home gardens and culinary enthusiasts. These young Brassica oleracea plants provide tender leaves packed with flavor, making them an ideal addition to salads or sandwiches throughout the cool growing season.
📷 Wikimedia CommonsStarting Broccoli Microgreens: indoors or direct sow?
🌾 Sow directly in the garden — Broccoli Microgreens is not usually started indoors.
Broccoli microgreens are harvested in place and do not require transplanting outdoors; they are grown directly in trays or shallow containers until ready for harvest.
Soil, care & harvest
Prepare your growing medium by ensuring it has a pH between 5.5 and 6.5 for optimal growth. Since this is a cool-season crop, sow seeds indoors 2-6 weeks before the last spring frost date. Broadcast the seeds densely onto the surface without covering them deeply, as they require light to germinate effectively within 2-3 days.
Keep the growing medium consistently moist by misting the plants 2-3 times daily. Because these microgreens are grown densely in shallow trays, no trellising or additional spacing is required beyond the initial broadcast sowing. Avoid heavy feeding; they thrive on the nutrients already present in your starter mix until harvest.
Watch for aphids and fungus gnats indoors, preventing them with good ventilation and avoiding overwatering to stop mold or damping off. Harvest your broccoli microgreens when they reach maturity, typically within 7-10 days of sowing. Simply snip the stems just above the soil line using scissors to collect your fresh crop.
When to Plant Broccoli 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 Broccoli Microgreens
✓ Good companions
Fellow brassica with similar needs, can be grown together efficiently
Repels aphids and other pests that commonly attack brassicas
Attracts beneficial insects and may improve growth of brassica plants
Similar growing conditions and harvest timing, doesn't compete for space
Deters flea beetles and ants that can damage young brassica shoots
Provides natural fungicidal properties and pest deterrence
Nitrogen-fixing properties benefit brassica growth
Natural pest deterrent properties help protect brassica family plants
Compatible growing requirements and doesn't compete for nutrients
✗ Keep away from
Strong allelopathic compounds inhibit growth of most brassica family plants
Can harbor pests and diseases that transfer to brassica microgreens
Allelopathic effects can inhibit brassica germination and growth
Nutrition Facts
Per 100g serving (USDA FoodData Central)
