Every 2 to 4 years. Spring or fall. Spreading root division. Every 3 to 6 years or as desired to increase stock. Spring, summer or fall.
Ideal time is after bloom is finished.
Divide fleshy roots into segments with roots. Divisions with three or more shoots will bloom sooner. For plant increase, rarely needs division. Divisions may wait up to 3 years before blooming. September or October.