size of dasylirion - Knowledgebase Question

Riverbank, Ca
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Question by kate581
September 5, 2005
How tall and wide does Dasylirion longissimum grow to be? My belief is that it is an evergreen grass-like plant and not a perennial. Am I correct? The blades appear to be more stiff than a typical grass.

I am in USDA Zone 9 and would like to know if it grows well here.

Answer from NGA
September 5, 2005
Dasylirion longissima (D. quadrangulatum) is also called the Mexican Grss Tree. The green leaves grow in a fountainlike clump, reaching about 5 feet high and wide. It is native to the deserts and mountains of the Southwest and Mexico and produces clumps of narrow, grassy leaves which spring from a woody base that can, with age, grow into a treelike trunk. It needs good drainage and is very drought tolerant. it should be a perennial in your southern California garden.

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