How to Grow Sunflower Microgreens
Helianthus annuus
Sunflower microgreens offer a vibrant addition to any salad bowl, providing a nutty flavor and rich nutrients in just days. Gardeners cultivate them for their rapid growth and high yield potential within small spaces.
📷 Wikipedia: Common sunflowerStarting Sunflower Microgreens: indoors or direct sow?
🌾 Sow directly in the garden — Sunflower Microgreens is not usually started indoors.
These are grown as microgreens in shallow trays and are harvested before any transplanting is possible or required.
Soil, care & harvest
Prepare your soil mix to maintain a pH between 6.0 and 7.5 before sowing seeds densely at 1.5 to 2 ounces per tray. Although sunflowers are warm-season crops, you can start these microgreens indoors anytime; they do not require waiting until after the last frost like standard field plants. Press seeds lightly into the medium but do not cover them deeply.
Keep soil consistently moist with moderate watering to support steady growth without drowning roots. Since these are harvested young, trellising is unnecessary, though ensure trays have drainage holes. Avoid heavy feeding as microgreens thrive on existing soil nutrients and should not be over-mulched in such shallow systems.
Watch for fungus gnats and aphids indoors; improve air circulation to prevent damping off or mold caused by poor ventilation. Harvest your sunflower microgreens 85 to 95 days after sowing, though note that standard field varieties typically take much longer than most other microgreen species.
When to Plant Sunflower 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 Sunflower Microgreens
✓ Good companions
Repels aphids and thrips that commonly attack microgreens, aromatic compounds may enhance growth
Natural fungicide properties help prevent damping-off disease common in microgreen production
Attracts beneficial insects and has similar water and light requirements
Similar growing conditions and nutrient requirements, compatible root systems
Releases compounds that deter spider mites and aphids while reducing soil-borne pathogens
Acts as trap crop for aphids and cucumber beetles, edible flowers complement microgreen dishes
Helps repel pests and has complementary nutrient uptake patterns
Compatible growth rates and harvesting schedule, may improve soil aeration
✗ Keep away from
Releases juglone toxin that severely stunts growth and causes wilting
Produces allelopathic compounds that inhibit seed germination and early growth
Aggressive root system competes for nutrients and can overwhelm delicate microgreen roots
Nutrition Facts
Per 100g serving (USDA FoodData Central)
