The Q&A Archives: Dividing Dianella roots or bulbs or rhizomes- which one is it?

Question: When is a good time to divide Dianella? I want to do this for a client but I feel it is too early to do with her existing dianella. They have been in her yard for about 3 - 4 years. If I can't do it now I will have to wait for spring to buy new ones, is this correct?

Answer: Dianella tasmanica is a member of the lily family and spreads by rhizomes. The clumps are usually dug and divided in the spring but in your mild winter gardening zone, you can dig and divide now. Depending upon growing conditions and soil types, Dianella typically needs dividing every 2-3 years. Hope this answers all your questions!

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