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Chapter 2§9229 TREE PRESERVATION AND PLANTING REQUIREMENTS

§9229.9 REQUIRED STREET TREES FOR NONPRIMARY STREETS

Ukiah Zoning Code · 2026-07 edition · updated 2026-07-07 · Ukiah

Table 23 identifies the required tree species for all streets not included in Table 21. There are no alternate trees for nonprimary streets due to the wide variety of species included in Table 23. Requests to use a species not included in Table 23 require Planning Commission approval of a major exception. The exception application shall include the items required by subsections 9229.8A1 through 9229.8A4 of this code and Table 29.

Table 23: Required Street Trees for Nonprimary Streets

Common
Name
Scientific
Name
Average
Height
(feet)
Average
Spread
(feet)
Evergreen
or
Deciduous
Drought
Tolerant
Native
(Yes/No)
Canopy
Type
Suitable For Suitable For Suitable For Modific
to Stan
Roots
and
Confined
Spaces
Overhead
Wires
Canopy
and
Confined
Spaces
Locational
Requirements/
Characteristics
Chinese
Pistache
Pistacia
Chinesis
40 ft. 40 ft. Deciduous Yes No Round Moderate No No Supplement
existing only at
intersection of
Perkins Street
and State Street
Major
Exceptio
Dwarf
Southern
Magnolia
Magnolia
grandifloria
‘Little Gem’
25 ft. 15 ft. Evergreen Moderate No Fastigiate Yes Yes Yes At intersection of
Perkins Street
and State Street
Major
Exceptio
European
Hornbeam
Carpinus
betulus
‘Fastigiata’
50 ft. 30 ft. Deciduous Moderate No Oval Yes No Yes Fast growth,
needs water
when young
Major
Exceptio
Flowering
Pear
Pyrus
calleryana
‘Aristocrat’
40 ft. 30 ft. Deciduous Moderate No Pyramidal Yes No Yes Alternate to
Plantanus in
restrictive
locations
Major
Exceptio
Fruitless
Olive
Olea europea
‘Swan Hill’
25 ft. 20 ft. Evergreen Yes No Round Yes Yes Yes Use at
intersections
Major
Exceptio
Grecian
Laurel
Laurus
nobilis
30 ft. 25 ft. Evergreen Yes No Pyramidal Yes Yes Yes Use at
intersections or
limited canopy
locations
Major
Exceptio
London Plane
Plantanus
acerfolia
‘Bloodgood’
60 ft. 40 ft. Deciduous Yes No Broadly
pyramidal
Moderate No No Well suited to
urban site
conditions, better
choice for water
retentive soils
Major
Exceptio
Oak, Black
Quercus
kelloggii
50 ft. 40 ft. Deciduous Yes Yes Round Moderate No No Predominant
street tree for
Perkins Street.
Native oak
species
Major
Exceptio
Oak, English
Fastigiate
Quercus
robur
‘Fastigiata’
45 ft. 15 ft. Deciduous Moderate No Fastigiate Yes No Yes Fast upright
growth for
limited canopy
locations
Major
Exceptio
Oak, Holly
Quercus ilex
35 ft. 35 ft. Evergreen Yes No Round Moderate Yes Moderate Use at all
intersections
Major
Exceptio
Oak, Interior
Live
Quercus
wislizanii
35 ft. 40 ft. Evergreen Yes Yes Round Yes No No Use at
intersections
when adequate
space at bulb
outs
Major
Exceptio
Oak, Red
Quercus
rubra
70 ft. 50 ft. Deciduous Yes No Spreading No No No Slow growth,
attractive shade
tree
Major
Exceptio
Oak, Valley 70 ft. 50 ft. Deciduous Moderate
with deep
Yes Round No No No At library
parking lot,
Major
Exceptio
Common
Name
Scientific
Name
Average
Height
(feet)
Average
Spread
(feet)
Evergreen
or
Deciduous
Drought
Tolerant
Native
(Yes/No)
Canopy
Type
Suitable For Suitable For Suitable For Modific
to Stan
Roots
and
Confined
Spaces
Overhead
Wires
Canopy
and
Confined
Spaces
Locational
Requirements/
Characteristics
Quercus
lobata
soil pocket park and
Gibson Creek
Redbud
Cercis
reniformis
‘Oklahoma’
20 ft. 20 ft. Deciduous Yes No Vase Yes Yes Yes Suitable under
utility lines,
spring blooms
Major
Exceptio
Washington
Hawthorne
Crataegus
phaenopyrum
25 ft. 20 ft. Deciduous Moderate No Vase Yes Yes Yes Suitable under
utility lines,
spring
blooms/fall color
Major
Exceptio

(Ord. 1139, §2 (Exh. A, 10.100), adopted 2012)

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