Ukiah Zoning Code § 9229.7 Required Street Trees (CA)

Table 21: Required Street Trees for Primary Streets, identifies the tree species that are required to be planted on specific primary streets. Considerations for selection of the species to be planted include site constraints, such as root confinement, overhead wires, canopies, and other street trees in the area. The intent is to create a unifying theme consistent with the street tree design principles included in section 9229.5 of this code by limiting the number of tree species, thereby creating a distinct identity for each primary street included in Table 21. As noted in Table 21, for most streets there is one tree identified to be used at intersections and opportunities to select from several species for planting within the block.

Table 21: Required Street Trees for Primary Streets

Common Name Scientific Name	Average Height (feet)	Average Spread (feet)	Evergreen or Deciduous	Drough Toleran	t t Native (Yes/No)	Canopy Type	Suitable For	Suitable For	Suitable For		Modificat to Standa
							Roots and Confined Spaces	Overhead Wires	Canopy and Confined Spaces	Location Requirements/ Characteristics

Main Street
Chinese Pistache	40 ft.	40 ft.	Deciduous	Yes	No	Round	Moderate	No	No	Supplement existing only at	Minor Exception (

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		Modificat to Standa
							Roots and Confined Spaces	Overhead Wires	Canopy and Confined Spaces	Location Requirements/ Characteristics
Pistacia Chinesis										intersection of Perkins Street and State Street	(2)
Holly Oak Quercus ilex	35 ft.	35 ft.	Evergreen	Yes	No	Round	Moderate	Yes	Moderate	Use at all intersections	Minor Exception ( (2)
Red Oak Quercus rubra	70 ft.	50 ft.	Deciduous	Yes	No	Spreading	No	No	No	Slow growth, attractive shade tree	Minor Exception ( (2)
Valley Oak Quercus lobata	70 ft.	50 ft.	Deciduous	Moderate with deep soil	Yes	Round	No	No	No	At library parking lot, pocket park and Gibson Creek	Minor Exception ( (2)
Perkins Street Entry Gateway – From Orchard Street to School Street
Black Oak Quercus kelloggii	50 ft.	40 ft.	Deciduous	Yes	Yes	Round	Moderate	No	No	Predominant street tree for Perkins Street. Native oak species	Minor Exception ( (2)
Holly Oak Quercus ilex	35 ft.	35 ft.	Evergreen	Yes	No	Round	Moderate	Yes	Moderate	Moderate growth rate, to complement existing	Minor Exception ( (2)
Dwarf Southern Magnolia Magnolia grandiflora ‘Little Gem’	25 ft.	15 ft.	Evergreen	Moderate	No	Fastigiate	Yes	Yes	Yes	At intersection of Perkins Street and State Street	Minor Exception ( (2)
School Street
Chinese Pistache Pistacia Chinesis	40 ft.	40 ft.	Deciduous	Yes	No	Round	Moderate	No	No	The only species to be used on School Street	Minor Exception ( (2)
State Street
Interior Live Oak Quercus wislizanii	35 ft.	40 ft.	Evergreen	Yes	Yes	Round	Yes	No	No	Use at intersections when adequate space at bulb outs	Minor Exception ( (2)
London Sycamore Plantanus acerfolia ‘Bloodgood’	60 ft.	40 ft.	Deciduous	Yes	No	Broadly Pyramidal	Moderate	No	No	Predominant street tree for State Street. Well suited to local conditions	Minor Exception ( (2)
1. Zoning Administrator approval of a minor exception is required to use a tree species from Table 22: Alternate Street Trees for Primary Streets. 2. Planning Commission approval of a major exception is required to use a tree species that is not from Table 22: Alternate Street Trees for Primar Streets.

(Ord. 1139, §2 (Exh. A, 10.080), adopted 2012)