Growing Guides Microgreens

How to Grow Broccoli Microgreens

Jar Growing (Sprouting Method)

Broccoli performs very well in a sprouting jar and is one of the easiest varieties for this method.

• 1. Soak Seeds
  Place the seeds in a clean sprouting jar and soak them in cool water for 4 to 8 hours.
• 2. Drain and Rinse
  Drain the soaking water, then rinse the seeds well. Cover the jar with a mesh lid or sprouting screen.
• 3. Keep the Jar Tilted
  Place the jar upside down at an angle so excess water can drain away and air can circulate freely.
• 4. Rinse Daily
  Rinse and drain the seeds 2 to 3 times per day. Make sure the seeds are never left sitting in water.
• 5. Grow Until Ready
  Keep the jar in a well-ventilated area out of direct sun while the sprouts develop. Continue rinsing daily until they reach the size you prefer.
• 6. Harvest
  Broccoli sprouts are usually ready in about 3 to 5 days. Give them a final rinse, drain well, and refrigerate once dry.

Tray Growing

Broccoli grows very well in a tray and produces strong, leafy microgreens with excellent yield.

• 1. Soak Seeds
  Soak broccoli seeds in cool water for 4 to 8 hours before sowing. This helps encourage fast, even germination.
• 2. Prepare a Tray and Growing Medium
  Use a shallow growing tray, no more than 2 inches deep. Fill it with 1 to 2 inches of moistened seed-starting mix or another fine growing medium.
• 3. Sow the Seeds
  Sprinkle the seeds evenly across the surface. Sow densely, but avoid heavy overlap. Lightly mist the surface after sowing.
• 4. Germinate
  Place the tray in a warm area, ideally around 70°F, away from direct light. Covering the tray during germination can help maintain moisture and encourage even sprouting. Keep the surface moist, but not soggy.
• 5. Grow On
  Once the seeds have sprouted, move the tray into bright light or provide 10 to 16 hours of light per day. Keep the growing medium evenly moist. Bottom watering is recommended after germination to help keep the foliage dry.
• 6. Harvest
  Broccoli microgreens are usually ready in about 7 to 12 days. Harvest when they are 1 to 2 inches tall and have fully opened cotyledons. Cut just above the surface with clean scissors.

Growing Tips

• For tray growing, sow broccoli seeds evenly for a full, uniform crop with good airflow.
• Broccoli germinates well in warm conditions, around 70°F.
• Covering the tray during germination can help improve moisture retention and support even sprouting.
• After germination, bottom watering helps keep stems and leaves drier and may reduce the risk of rot.
• For jar growing, thorough draining is essential. Good airflow helps produce clean, crisp sprouts.
• Store harvested broccoli microgreens or sprouts dry in an airtight container in the refrigerator. Wash only before use if needed.