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Urban Sprouts

How to Grow Your Urban Sprouts Microgreens

Growing your own fresh, nutrient-dense microgreens at home is simple, fast, and rewarding. Follow this step-by-step guide to turn your Urban Sprouts seed packs into vibrant, delicious greens.

Grow Kit Instructions

What You'll Need

  • Urban Sprouts Seed Packet
  • 2 Grow Trays (one with drainage holes, one without)
  • Coco Coir or preferred growing medium
  • Clean water
  • Spray bottle or misting bottle
  • Light source (sunny window or grow light)



Step 1: Seed Preparation (Important!) Soak Larger Seeds Before Planting:

Step 1: Seed Preparation (Important!) Soak Larger Seeds Before Planting:

Step 1: Seed Preparation (Important!) Soak Larger Seeds Before Planting:

No Soak Needed:

  • Broccoli
  • Radish
  • Mustard
  • Arugula
  • Amaranth
  • Wasabi

Soak for 6–12 hours:

  • Sunflower
  • Speckled Pea

After soaking, drain and rinse seeds well.

Step 2: Prepare Your Growing Medium

Step 1: Seed Preparation (Important!) Soak Larger Seeds Before Planting:

Step 1: Seed Preparation (Important!) Soak Larger Seeds Before Planting:

  1. Add water to your coco coir until it reaches a moist, fluffy texture.
  2. Fill your tray evenly with 1–2 inches of growing medium.
  3. Lightly press the surface flat—firm but not compacted.
  4. Mist the surface thoroughly before sowing seeds.

Step 3: Sow Your Seeds

Step 1: Seed Preparation (Important!) Soak Larger Seeds Before Planting:

Step 3: Sow Your Seeds

  1. Spread seeds evenly across the tray surface.
  2. Aim for full coverage without excessive overlapping.
  3. Gently mist seeds after sowing.
  4. Cover with your second tray (place tray without holes on top)

Step 4: Blackout Phase (Days 1–3)

Step 4: Blackout Phase (Days 1–3)

Step 4: Blackout Phase (Days 1–3)

This encourages strong root growth and even germination.


During blackout:

  • Keep seeds covered for three days

Step 5: Introduce Light (Day 4)

Step 4: Blackout Phase (Days 1–3)

Step 4: Blackout Phase (Days 1–3)

  • Remove top tray then place underneath to begin bottom watering
  • Place under grow lights for 12–16 hours/day or keep in a bright spot out of direct sunlight
  • If using lights, keep lights 8–18 inches above canopy
  • Ensure airflow with a small fan if possible

Step 6: Bottom Water (DAYS 5-10)

Step 4: Blackout Phase (Days 1–3)

Step 6: Bottom Water (DAYS 5-10)

Pour water into the bottom tray once daily. This will allow roots to absorb moisture.


Step 7: Harvest Windows

Step 7: Harvest Windows

Step 7: Harvest Windows

  • Broccoli: 8–10 days
  • Radish: 7–9 days
  • Mustard: 7–10 days
  • Arugula: 8–12 days
  • Sunflower: 8–12 days
  • Speckled Pea: 10–14 days
  • Amaranth: 10–14 days
  • Wasabi: 8–12 days


To Harvest:

  • Use clean scissors
  • Cut just above the growing medium
  • Do not pull roots

Step 8: Store & Enjoy

Step 7: Harvest Windows

Step 7: Harvest Windows

  • Rinse gently if desired
  • Dry thoroughly
  • Store in the refrigerator
  • Best enjoyed within 7–14 days

Troubleshooting Tips Mold or Fuzzy Growth?

Troubleshooting Tips Mold or Fuzzy Growth?

Troubleshooting Tips Mold or Fuzzy Growth?

  • Improve airflow
  • Reduce watering
  • Ensure proper drainage


Yellow Greens?

  • Increase light exposure


Poor Germination?

  • Check moisture levels
  • Ensure proper seed density
  • Verify seed freshness

Pro Tips for Success

Troubleshooting Tips Mold or Fuzzy Growth?

Troubleshooting Tips Mold or Fuzzy Growth?

  • Keep temperatures between 65–75°F
  • Sanitize trays between grows
  • Use clean water
  • Don’t oversow
  • Harvest at peak color and flavor

SProutin' Jar Instructions

What You'll Need

  • Glass Mason Jar 
  • Sproutin’ Lid / Strainer Top 
  • Metal Stand 
  • Urban Sprouts Seed Packet
  • Simple Growing Instructions



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Urban Sprouts LLC

Odessa, FL, 33556

Copyright © 2026 Urban Sprouts - All Rights Reserved.

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