07 Landscaping, Buffering, and Screening
Table 21.07-1: Minimum Plant Sizes | |
|---|---|
Planting Type | Size at Time of Planting |
Shade tree | Two caliper inches [1] |
Ornamental tree | One-and-one-half caliper inches |
Evergreen tree | Two caliper inches and six feet tall |
Shrub | #5 Container |
Perennial | #1 Container |
Groundcover | #1 Container |
Turf [2] | As seed, by plug, or as sod roll |
Notes: | |
[1] | If two caliper inch shade trees are not available due to seasonal shortages or shortages in desired varieties, the Director may approve the installation of smaller trees, provided the proportional difference in caliper inches is compensated for by installing additional trees. However, a minimum caliper of 1 1/2 inches shall be required. |
[2] | Turf mix, native grasses and wild flower mix are the only vegetation that may be planted as seed or by plugs. Turf may be planted as sod rolls. |
Table 21.07-2: Landscaping Requirements | |
|---|---|
Development Procedure and Zoning or Use of Proposed Development | Landscape Requirement |
Major Subdivision | As required in subsections of this section where applicable |
Major Site Plan: R-R, R-ER, R-1R, R-2R, RL-4, RL-5, RM-8, RM-12, RH-16, RH-24, MU-1, MU-2, MU-3, CG, I-OR, P-1, P-2 | Two caliper inches of tree per 3,000 square feet of improved area, with no more than 40% of the total being ornamental trees or evergreens. One #5 container shrub per 450 square feet of improved area |
Major Site Plan: I-1, I-2 | As required in subsections of this section where applicable |
Facilities: Mining and extraction, dairy operations or feedlot, vineyard, airport or heliport, commercial pasture | Two caliper inches of tree per 5,000 square feet of improved area. One #5 container shrub per 600 square feet of improved area |
Table 21.07-3: Tree Replacement Requirements | |
|---|---|
Percent of Trees Preserved | Tree Replacement Ratio |
Minimum 30% preservation | 3 caliper inches per 5 inches DBH [1] |
Above 30% minimum | 1 caliper inch per 3 inches DBH [2] |
Significant trees damaged or killed during construction | 3 caliper inches per 5 inches DBH [1] |
Notes: | |
[1] | If developer cannot replace trees on-site, they may pay a fee-in-lieu according to GJMC § 21.07.040(f). |
[2] | See GJMC § 21.07.040(d)(1)(ii) for credit applied to preserved trees. |
Table 21.07-4: Buffer Requirements | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Zoning of Adjacent Property | ||||||||||||
Zoning of Proposed Development [1] [2] [3] | R-R, R-ER, R-1R, R-2R, RL-4 | RL-5 | RM-8 | RM-12, RH-16 | RH-24 | MU-1 | MU-2 | MU-3 | C-1 | CG, I-OR | I-1 | I-2 |
R-R, R-ER, R-1R, R-2R, RL-4 | — | — | — | — | — | — | F | — | F | W | W | W |
RL-5 | — | — | — | — | — | — | F | — | F | W | W | W |
RM-8 | — | — | — | — | — | F | F | — | F | W | W | W |
RM-12, RH-16 | — | — | — | — | — | — | F | — | W | W | W | W |
RH-24 | — | — | — | — | — | — | F | — | W | W | W | W |
MU-1 | A or F | A or F | A or F | A or F | A or F | — | A or F | — | A or F | A and F or W | A and F or W | A and F or W |
MU-2 | A or F | A or F | A or F | A or F | A or F | A or F | — | — | A or F | A or F | A or F | A or F |
MU-3 | — | — | — | — | — | — | — | — | — | — | — | — |
CG, I-OR | W | W | W | W | W | W | F | — | — | — | — | A or F |
I-1 | W | W | W | W | W | W | F | — | — | — | — | — |
I-2 | A and F or W | W | W | W | W | W | F | — | — | — | — | — |
P-1, P-2 [4] | — | — | — | — | — | — | — | — | — | — | — | — |
Notes: | ||||||||||||
[1] | A berm with landscaping is an alternative for a required fence or wall if the total height is a minimum of six feet. | |||||||||||
[2] | Where alleys or streets separate different zone districts, the Director may approve increased landscaping rather than requiring a wall or fence. | |||||||||||
[3] | The Director may modify this table based on the uses proposed in any zone district. | |||||||||||
[4] | Gravel operations subject to buffering adjacent to residential. | |||||||||||
Table 21.07-5: Buffer Landscaping Requirements | ||
|---|---|---|
Buffer Types [1] | Landscaping Requirements | Location of Buffers on Site |
Type A | Eight-foot-wide landscape strip with trees and shrubs | Between different uses |
Type A and F | 15-foot-wide landscape strip with trees and shrubs | Between different uses |
Type F, W | Six-foot fence and wall (see Subsection (f) of this section) | Between different uses |
Notes: | |
[1] | Fences and walls are required for most buffers. |
Table 21.07-6: Planting Substitutions | ||||
|---|---|---|---|---|
Tree | Shrub | Groundcover/ Perennials | Wall | |
Tree | Two inches in DBH of preserved tree to one caliper inch required new trees | Three shrubs for one caliper inch of tree | N/A | N/A |
Shrub | Three shrubs for one caliper inch of tree | N/A | Three #1 container perennials and/or ground cover for one #5 container shrub | Two #5 container shrubs (minimum 30 inches in height) for four linear feet of wall |
Groundcover/ Perennial | N/A | Three #1 container perennials and/or ground cover for one #5 container shrub | N/A | N/A |
Wall | N/A | Two #5 container shrubs (minimum 30 inches in height) for four linear feet of wall | N/A | N/A |
07 Landscaping, Buffering, and Screening
Table 21.07-1: Minimum Plant Sizes | |
|---|---|
Planting Type | Size at Time of Planting |
Shade tree | Two caliper inches [1] |
Ornamental tree | One-and-one-half caliper inches |
Evergreen tree | Two caliper inches and six feet tall |
Shrub | #5 Container |
Perennial | #1 Container |
Groundcover | #1 Container |
Turf [2] | As seed, by plug, or as sod roll |
Notes: | |
[1] | If two caliper inch shade trees are not available due to seasonal shortages or shortages in desired varieties, the Director may approve the installation of smaller trees, provided the proportional difference in caliper inches is compensated for by installing additional trees. However, a minimum caliper of 1 1/2 inches shall be required. |
[2] | Turf mix, native grasses and wild flower mix are the only vegetation that may be planted as seed or by plugs. Turf may be planted as sod rolls. |
Table 21.07-2: Landscaping Requirements | |
|---|---|
Development Procedure and Zoning or Use of Proposed Development | Landscape Requirement |
Major Subdivision | As required in subsections of this section where applicable |
Major Site Plan: R-R, R-ER, R-1R, R-2R, RL-4, RL-5, RM-8, RM-12, RH-16, RH-24, MU-1, MU-2, MU-3, CG, I-OR, P-1, P-2 | Two caliper inches of tree per 3,000 square feet of improved area, with no more than 40% of the total being ornamental trees or evergreens. One #5 container shrub per 450 square feet of improved area |
Major Site Plan: I-1, I-2 | As required in subsections of this section where applicable |
Facilities: Mining and extraction, dairy operations or feedlot, vineyard, airport or heliport, commercial pasture | Two caliper inches of tree per 5,000 square feet of improved area. One #5 container shrub per 600 square feet of improved area |
Table 21.07-3: Tree Replacement Requirements | |
|---|---|
Percent of Trees Preserved | Tree Replacement Ratio |
Minimum 30% preservation | 3 caliper inches per 5 inches DBH [1] |
Above 30% minimum | 1 caliper inch per 3 inches DBH [2] |
Significant trees damaged or killed during construction | 3 caliper inches per 5 inches DBH [1] |
Notes: | |
[1] | If developer cannot replace trees on-site, they may pay a fee-in-lieu according to GJMC § 21.07.040(f). |
[2] | See GJMC § 21.07.040(d)(1)(ii) for credit applied to preserved trees. |
Table 21.07-4: Buffer Requirements | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Zoning of Adjacent Property | ||||||||||||
Zoning of Proposed Development [1] [2] [3] | R-R, R-ER, R-1R, R-2R, RL-4 | RL-5 | RM-8 | RM-12, RH-16 | RH-24 | MU-1 | MU-2 | MU-3 | C-1 | CG, I-OR | I-1 | I-2 |
R-R, R-ER, R-1R, R-2R, RL-4 | — | — | — | — | — | — | F | — | F | W | W | W |
RL-5 | — | — | — | — | — | — | F | — | F | W | W | W |
RM-8 | — | — | — | — | — | F | F | — | F | W | W | W |
RM-12, RH-16 | — | — | — | — | — | — | F | — | W | W | W | W |
RH-24 | — | — | — | — | — | — | F | — | W | W | W | W |
MU-1 | A or F | A or F | A or F | A or F | A or F | — | A or F | — | A or F | A and F or W | A and F or W | A and F or W |
MU-2 | A or F | A or F | A or F | A or F | A or F | A or F | — | — | A or F | A or F | A or F | A or F |
MU-3 | — | — | — | — | — | — | — | — | — | — | — | — |
CG, I-OR | W | W | W | W | W | W | F | — | — | — | — | A or F |
I-1 | W | W | W | W | W | W | F | — | — | — | — | — |
I-2 | A and F or W | W | W | W | W | W | F | — | — | — | — | — |
P-1, P-2 [4] | — | — | — | — | — | — | — | — | — | — | — | — |
Notes: | ||||||||||||
[1] | A berm with landscaping is an alternative for a required fence or wall if the total height is a minimum of six feet. | |||||||||||
[2] | Where alleys or streets separate different zone districts, the Director may approve increased landscaping rather than requiring a wall or fence. | |||||||||||
[3] | The Director may modify this table based on the uses proposed in any zone district. | |||||||||||
[4] | Gravel operations subject to buffering adjacent to residential. | |||||||||||
Table 21.07-5: Buffer Landscaping Requirements | ||
|---|---|---|
Buffer Types [1] | Landscaping Requirements | Location of Buffers on Site |
Type A | Eight-foot-wide landscape strip with trees and shrubs | Between different uses |
Type A and F | 15-foot-wide landscape strip with trees and shrubs | Between different uses |
Type F, W | Six-foot fence and wall (see Subsection (f) of this section) | Between different uses |
Notes: | |
[1] | Fences and walls are required for most buffers. |
Table 21.07-6: Planting Substitutions | ||||
|---|---|---|---|---|
Tree | Shrub | Groundcover/ Perennials | Wall | |
Tree | Two inches in DBH of preserved tree to one caliper inch required new trees | Three shrubs for one caliper inch of tree | N/A | N/A |
Shrub | Three shrubs for one caliper inch of tree | N/A | Three #1 container perennials and/or ground cover for one #5 container shrub | Two #5 container shrubs (minimum 30 inches in height) for four linear feet of wall |
Groundcover/ Perennial | N/A | Three #1 container perennials and/or ground cover for one #5 container shrub | N/A | N/A |
Wall | N/A | Two #5 container shrubs (minimum 30 inches in height) for four linear feet of wall | N/A | N/A |