Sunflower Microgreens
Helianthus annuus
Nutty, crunchy, and substantial. One of the most popular microgreens with excellent yield.
8-12
70°F
3-5 inches
1-1.5 lbs per 10x20 tray
Soak Required
8-12 hours
Blackout Days
3 days
Light Hours
12 hours/day
Temperature Range
65-75°F (18-24°C)
Humidity
50-70%
Seed Density
8-10 oz (225-280g) per 10x20 tray
Preferred Growing Medium
Watering
Bottom watering
2 times daily
Harvest Tips
- • Cut just above the soil line with sharp scissors
- • Harvest when cotyledons are fully expanded
- • Expected height at harvest: 3-5 inches
- • Typical yield: 1-1.5 lbs per 10x20 tray
Prepare & Sow
Soak seeds for 8-12 hours, then drain well. Fill tray with moistened soil. Spread 8-10 oz (225-280g) per 10x20 tray evenly across the surface. Press gently and mist thoroughly.
Blackout Period
Cover with inverted tray and add 5-15 lbs of weight. Keep covered for 3 days. Check daily and mist if dry. Maintain 65-75°F (18-24°C).
Light Period
Remove cover and move to grow lights. Provide 12 hours of light daily.Bottom watering. Water 2 times daily. Maintain 50-70% humidity with good airflow.
Harvest
Harvest in 8-12 days when 3-5 inches tall. Cut just above the soil line with sharp, clean scissors. Store in Store in produce bag, use while fresh for up to 7-10 days refrigerated.