To propagate a Calanthe orchid, the most common method is division, where you separate the plant’s rhizome into multiple sections, ensuring each section has a few pseudobulbs, roots, and a piece of the rhizome, and then repot each division individually; the best time to do this is in the spring after flowering is finished. 

Key steps for propagating Calanthe orchids through division:

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

Inspect the rhizome: Look for natural division points on the rhizome where you can separate the plant. 

Use sharp tools: With a clean, sharp knife or pruning shears, carefully cut through the rhizome to separate the sections. 

Ensure each division has enough roots and pseudobulbs: Each new plant should have at least a couple of pseudobulbs and a good root system attached. 

Repot the divisions: Plant each separated section in a fresh pot with suitable orchid potting mix, making sure the rhizome is slightly buried. 

Important points to remember:

Sterilize your tools: Always sanitize your cutting tools before dividing the plant to prevent infection. 

Choose healthy plants: Only divide healthy, established Calanthe orchids. 

Watering after division: Water the newly potted divisions gently, allowing the soil to dry slightly between waterings.