To propagate crocosmia, you can divide the corms every 2–4 years. This process is called dividing, and it helps prevent overcrowding and rejuvenates the plant.
Steps for dividing crocosmia
Dig up the corms in the spring before new growth appears. Gently separate the corms by hand. Discard any diseased or shriveled corms. Replant the remaining corms 6–8 inches apart at the same depth as the original plant. Plant the top two corms from each string, as these will be the newest and most vigorous.
Why divide crocosmia?
- Dividing crocosmia helps prevent overcrowding.
- Dividing crocosmia increases the overall vigor of the plants.
- Dividing crocosmia rejuvenates crowded plants.
You can also propagate crocosmia by taking cuttings. To do this, you can:
Expect rooting to take 4–6 weeks.
Use a well-draining potting mix.
Maintain humidity with a plastic bag or humidity dome.
Keep the cuttings in a warm location with indirect sunlight.