The Urban Tree Key

By: Jeff Reimer

Jeff Reimer earned his BS in Forestry and MS in Urban Forestry from Cal Poly, San Luis Obispo where he…

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Monterey cypress (Hesperocyparis macrocarpa formerly Cupressus macrocarpa) develops a dramatic form as it provides a good windscreen along the coast. Photo: Jeff Reimer

The Urban Tree Key (www.urbantreekey.calpoly.edu) is a resource for identifying the 250 most common urban tree species in California. Simple questions and beautiful, graphic photos call out unique characteristics and lead you, step-by-step, to identifying the trees around you.

Hesperocyparis macrocarpa (formerly Cupressus macrocarpa) cones. Photo: Matt Ritter

Try it!