How to Propagate Ferns from Spores: A Patient Gardener's Guide

There are two main ways to multiply ferns: divide established clumps or collect and sprout spores. Spores are like tiny seeds but much smaller and slower to germinate. They appear as small bumps—often black or brown—lining the undersides of fertile fronds.

Step-by-Step Spore Propagation

Step 1: Gather Spores Place a mature fern frond on smooth white paper. After several days, ripe spores will fall onto the paper.

Step 2: Sow Spores Fold the paper to funnel spores into the crease, then sparsely sprinkle them over moist seed-starting mix. Mist gently after sowing.

Step 3: Wait Patiently Cover the container with clear plastic to maintain humidity. Keep the medium moist but not soggy. Spores can take several months to germinate.

Step 4: Transplant Young Ferns Once sprouted, keep them humid until they have at least three fronds, then transplant carefully.