To propagate a Christmas Fern, the most common method is to collect and sow spores from the underside of the mature fronds; however, you can also divide the plant by taking root divisions (rhizomes) in early spring when it’s dormant, ensuring each division has at least one frond and roots attached. 

Key points about propagating Christmas Fern with spores:

Harvesting spores: Look for mature, brown spores on the underside of the fronds, usually in the fall. 

Collecting spores: Place a piece of paper or cardboard under the plant to catch the falling spores. 

Sowing spores: Sprinkle the collected spores on a moist, sterile potting mix in a shallow container. 

Germination conditions: Cover the container with plastic wrap to maintain high humidity and place in a warm, bright, indirect light location. 

Patience required: Germination can take several weeks to months. 

Propagating with rhizome divisions:

Timing: Best done in early spring before new growth appears. 

Dig up the plant: Carefully remove the fern from its pot or the ground. 

Divide the rhizomes: Use a sharp knife to separate the rhizome into sections, making sure each section has at least one frond and roots. 

Repot divisions: Plant each rhizome section in a new pot with fresh potting mix. 

Important considerations:

  • Sterilization: Always sterilize your tools to prevent disease spread.
  • Moist environment: Keep the soil consistently moist throughout the propagation process.
  • Light conditions: Provide bright, indirect light for optimal growth.