The Q&A Archives: Phorbium tenax 'Atropurpureum Compactum'

Question: Is there a typical clump size, or do clumps of Phorbium tenax 'Atropurpureum Compactum' continually widen indefinately? If the latter is true, what is the recommended way of limiting them from spreading infinitely?

Answer: Bronze New Zealand Flax will reach a mature size of about 5' wide. You can dig and divide your plant every 3-4 years to keep it smaller. Dig the entire clump and divide it into several smaller clumps, then replant (or give extras to gardening friends). Spring or fall are the best times to dig and divide. Enjoy your garden!

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