Garden columnist Joshua Siskin recommends some trees suitable for Southern California yards.
John Winkler emailed me in search of seven desert trees.
These trees are suitable for landscaping throughout Southern California and are noteworthy, in addition to their low water requirement, for their small to medium size; they typically reach only 30 feet in height although most are fast growing. Most are also leguminous, meaning they do not require fertilization since they make their own nitrogenous fertilizer with the assistance of symbiotic bacteria that dwell in nodules on their roots.
Palo verde means “green stick” in Spanish and references its green bark. Most plants perform photosynthesis – by which they make their sustaining carbohydrate – with the assistance of the green chlorophyll pigment in their leaves. The palo verde has chlorophyll in its bark as well and most of its photosynthesis happens there. The palo verde is not only deciduous in the winter but may lose its leaves in the summer as a way to minimize water loss.
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