Ukiah Zoning Code § 9229.8 Alternate Street Trees

Table 22 identifies the tree species that may be used as a substitute for the species required by Table 21. For most streets included in Table 22 there is one tree identified to be used at intersections and opportunities to select from several species for planting within the block. Use of a tree from Table 22 requires Zoning Administrator approval of a minor exception. In order to plant a tree species that is not included in Table 21 or Table 22, Planning Commission approval of a major exception is required.

A. Exception Review and Considerations: The request for an exception shall be reviewed by the Planning Department, Public Works Department, and the Electric Utility Department. The exception application shall include the following information in addition to the information required by Table 29: Exception Procedures.

Why species from the required tree list cannot be planted;
Why the alternative species proposed is a preferred and appropriate substitute;
How the alternative species is consistent with the intent to create a unifying planting theme for the primary streets within the boundaries of this code; and
Other information as determined by the decision making body or reviewing departments.

Table 22: Alternate Street Trees for Primary 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	Locational Requirements/Characte
							Roots and Confined Spaces	Overhead Wires	Canopy and Confined Spaces

Main Street
Fastigiate English Oak Quercus robur ‘Fastigiata’	45 ft.	15 ft.	Deciduous	Moderate	No	Fastigiate	Yes	No	Yes	Fast upright growth for limi canopy locations
European Hornbeam Carpinus betulus ‘Fastigiata’	50 ft.	30 ft.	Deciduous	Moderate	No	Oval	Yes	No	Yes	Fast growth. Needs water w young
Fruitless Olive Olea europea ‘Swan Hill’	25 ft.	20 ft.	Evergreen	Yes	No	Round	Yes	Yes	Yes	Use at intersections
Perkins Street Entry Gateway – From Orchard Street to School Street
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 retentive soils
Redbud Cercis reniformis ‘Oklahoma’	20 ft.	20 ft.	Deciduous	Yes	No	Vase	Yes	Yes	Yes	Suitable under utility lines, blooms
Washington Hawthorne Crataegus phaenopyrum	25 ft.	20 ft.	Deciduous	Moderate	No	Vase	Yes	Yes	Yes	Suitable under utility lines, blooms/fall color
State Street
Flowering Pear Pyrus calleryana ‘Aristocrat’	40 ft.	30 ft.	Deciduous	Moderate	No	Pyramidal	Yes	No	Yes	Alternate to Platanus in rest locations
Grecian Laurel Laurus nobilis	30 ft.	25 ft.	Evergreen	Yes	No	Pyramidal	Yes	Yes	Yes	Use at intersections for limi canopy locations
School Street	– There Are No Alternate Street Trees for School Street

(Ord. 1139, §2 (Exh. A, 10.090), adopted 2012)