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September 04, 2015

Retarding a Vigorous Street Tree

Chinese Elm (Ulmus parvifolia) grows to 10–18 m tall and 15–20 m wide in ideal conditions. It's tough being a street tree but U. parvifolia is vigorous and resilient in San Francisco. This one in Noe Valley must have a low water table. It is never irrigated but is lush. I prune this tree ever 6-9 months. Essentially this is a extremely large bonsia. The soil in the tree basins act more like large containers then expanses of live soil.

Ready for a trim. After 5 hours of pruning and two dump runs:

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