How to Reuse Cocopeat for Microgreens — Step-by-Step Guide

Good news — cocopeat can be reused 3–4 times. But reusing it incorrectly is one of the top causes of fungus in subsequent crops.

How Many Times Can You Reuse Cocopeat?

• Use 1 & 2: Full reuse — performance almost identical to fresh
• Use 3: Mix 50:50 with fresh cocopeat
• Use 4: Final use — compost after this batch

Step-by-Step Reuse Process

Step 1 — Remove All Roots

After harvest, remove the root mat completely. No root material should remain.

Step 2 — Sun Dry Fully

Spread in a flat layer and dry in direct sun for 1–2 full days. This kills most fungal spores. Non-negotiable — skipping this step causes mold.

Step 3 — Microwave if Contamination Was Present

If previous crop had fungus, microwave the dry cocopeat for 1–2 minutes. Cool completely before using.

Step 4 — Mix with Fresh From Use 3

50:50 ratio restores structure and reduces pathogen buildup. Re-hydrate and check watering correctly before sowing.

When NOT to Reuse

• ❌ Previous crop had heavy fungus or root rot
• ❌ Smells sour even after drying too fast
• ❌ Used more than 4 times

Tray Cleaning

Wash with soap, scrub root residue, dry in sun. Clean tray setup is the foundation of the next batch.

Questions? Ask Sonia 🌱