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Glendale Public Library
Xeriscape Demonstration Garden Information Sheet

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Guaiacum coulteri

Flowers are intense blue.  Shrub or small tree, Slow to moderate grower depending upon moisture to 25', although frost will keep it smaller.  In warm areas, will develop into a tree and a shrub in colder ones.  Dark green pinnate leaves. Can be drought or cold deciduous.  Very beautiful but severe frosts limit it. Size is temp. related. Native gravelly plains western Mexico. Branch tips suffer below 30f.  Well drained site. 

Webmaster & Author George Hull Last Updated August 10, 2003