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Palo Alto residents play an important role in maintaining our Urban Forest. Much of the urban forest is made up of private trees that are planted outside the city right of way. These trees are an important part of the urban landscape and proper care from property owners can help keep our forest strong. Below you will find recommendations and resources that will help you care for both the private trees on your property and the public trees in the right-of-way in front of your property.
Instructional young tree-care brochure (Canopy)
One of the best ways to help grow our urban forest is to plant more trees! Our non-profit partner Canopy has many resources (listed below) to help you select the right tree for the right site on your property. A few of the factors you should consider when selecting a tree species and planting site include: available soil space, overhead utilities, underground utilities, surrounding vegetation, and distance from structures.
This video from Canopy demonstrates how to properly plant a tree.
Other Tree Planting Resources
All trees need water to thrive, even drought tolerant trees. Water young trees once a week, and water mature trees monthly or bi-monthly, particularly during hot, dry weather. Be sure to water trees deeply (the top 12+ inches should be wet) and water away from the trunk.
Established native California oaks (Quercus lobata and Q. agrifolia) should not be watered in the warm summer months.
Tree Watering Guidelines (Canopy)
Save Our Water & Our Trees (Canopy)
Spread a layer of organic mulch (e.g. wood chips) beneath trees. Inorganic mulches such as rocks and decomposed granite (DG) do not provide the same benefits that organic mulches do.
Properly applied mulch offers many benefits to trees by:
The mulch layer around trees should be 2-4” thick and the base of the trunk/root collar should remain exposed to prevent trunk rot. Avoid creating a 'Mulch Volcano'.
Trees Are Good-Proper Mulching Techniques PDF
Mechanical damage from mowers or string trimmers can cause serious damage, especially to young trees. Wounds are easily invaded by disease-causing pathogens and insects. Keep turf away from the base of trees. Also, take care when opening car doors near trees and do not lock bikes or attach other items to trees.
Trees grow best in uncompacted soil with about 50% pore space. This pore space allows for infiltration of air and water. Porous soil has better drainage and oxygen flow, and promotes root growth. Avoid driving and parking on the root zone of a tree. Vehicles, heavy machinery, or materials should not be stored beneath a tree.
*No new paving (concrete, asphalt, pavers, etc.) is permitted within 10 feet of a public tree (PAMC 8.04.020)
Residents see the public street trees in front of their home daily and are often the first to notice changes in tree condition. Please report changes in condition to public trees including damaging insects, diseases, physical damage, illegal pruning, etc. by calling (650) 496-5953 This will help us address the issue(s) in a timely manner.
Public Works Urban Forestry Section
Tree Planting, Public Tree Maintenance, Utility Line Clearance
Phone: (650) 496-5953
P.O. Box 10250
Palo Alto, CA 94303
Planning & Development
Urban Forestry counter hours: 9-12, Mon-Thurs.
285 Hamilton Avenue
Palo Alto, CA 94301
250 Hamilton Avenue
Palo Alto, CA 94301
General City Information
Last updated on October 27, 2020