Monthly Archives: November 2016

All young trees need water

Though Friends of the Urban Forest only plants tree species that are tolerant of drought, every young tree will need weekly irrigation in order to get established. We recommend watering 15-20 gallons in one watering every week for the first two years, and 15-20 gallons every other week in the third year.

After three years, most trees are established enough to grow on their own and only need supplemental irrigation if they show signs of distress.

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Pop a cork for this beauty

If you have room for a bigger tree, consider the Cork Oak (Quercus suber). This species does very well in San Francisco because it’s adapted to the Mediterranean climate and tolerates drought. This stately, spreading evergreen provides comfortable shade on sunny days.

The Cork Oak is named for its thick, insulating bark, which is the centuries-old sustainable source for bottle corks. Starting when the tree is 25-30 years old,

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