[Amended 4-23-2003; 8-12-2009; 1-23-2013]
The requirements of this section are intended to enhance the appearance, environment, and general welfare of Frederick County by providing minimum landscaping standards and encouraging tree preservation for developments. The provisions of this section shall apply to all site plan and subdivision design plan applications, including the revision or expansion of any site or development.
A.
Residential developments. Residential developments which require a master development plan, subdivision design plan or site plan shall provide at least one of the three types of landscaping identified below.
(1)
Street tree landscaping. Street tree landscaping shall require one street tree for every 40 feet of street frontage in a residential development, with the exception of frontage on roads which require a road efficiency buffer. Street trees shall be planted no more than 20 feet from rights-of-way. Planting street trees on the property lines of building lots should be avoided. Two or more street trees shall be planted on each building lot. The Zoning Administrator may allow fewer than two street trees for an individual building lot if topographical features, utilities, easements, or the width of the lot makes it impractical to do so. All street trees shall comply with the requirements of § 165-203.01B, with the exception that street trees must be at least two-and-one-half-inch caliper at the time of planting.
(2)
Ornamental landscaping.
(a)
Ornamental landscaping shall be provided for residential developments based on the following index and matrix:
[Amended 1-23-2013]
Index of Lot Types | |
|---|---|
Lot Type | Description |
A | Single-Family Detached Rural Traditional |
B | Single-Family Detached Traditional |
C | Single-Family Detached Urban |
D | Single-Family Detached Cluster |
E | Single-Family Detached Zero Lot Line |
F | Single-Family Small Lot |
G | Multiplex |
H | Townhouse, Back-to-Back Townhouse |
I | Garden Apartment, Multifamily Residential Buildings, and Age-Restricted Multifamily Housing |
Required Landscaping Per Dwelling Unit | ||
|---|---|---|
Lot Type | Ornamental Shrubs | Ornamental Trees |
A | None | 10 per 1 unit |
B | 10 per 1 unit | 5 per 1 unit |
C | 10 per 1 unit | 5 per 1 unit |
D | 10 per 1 unit | 5 per 1 unit |
E | 10 per 1 unit | 5 per 1 unit |
F | 15 per 1 unit | 5 per 1 unit |
G | 3 per 3 units* | 1 per 3 units* |
H | 6 per 5 units* | 2 per 5 units* |
I | 3 per 2 units* | 1 per 2 units* |
Note: | ||
|---|---|---|
*Required ornamental trees and shrubs are in addition to all trees and shrubs elsewhere required in the Zoning Ordinance. |
(b)
Ornamental trees and shrubs shall comply with the requirements of § 165-203.01B. The Zoning Administrator may allow some of the required ornamental trees and ornamental shrubs to be planted in areas of common open space so long as the intent of this section is met.
(3)
Tree preservation landscaping. An area with a tree canopy coverage, of at least 25% of the entire site area, shall be preserved within dedicated open space. In no case shall individual building lots be located within the open space. Canopy coverage shall be calculated from the cumulative total of existing tree canopies. Preserved trees shall be clustered together to maintain a contiguous canopy; and shall be protected from construction activity. These areas of open space may be counted towards the total required open space, as specified in § 165-402.07. Residential developments which are not required to have open space by § 165-402.07 are not exempt from creating open space for the required canopy coverage. The calculation of tree canopy shall be based on either the individual tree standards of the "Manual of Woody Landscape Plants," written by Michael A. Dirr, or through a comprehensive analysis of existing tree drip lines, conducted by a Virginia certified engineer, land surveyor, or landscape architect.
B.
Plant selection, planting procedure, and maintenance.
(1)
Plant selection. Based on the type of landscaping, required trees and shrubs shall be selected from the table of acceptable trees and shrubs shown below.
[Amended 12-11-2019]
Types of Landscaping | ||
|---|---|---|
Street tree landscaping (street) Ornamental landscaping (ornamental) Tree preservation landscaping (canopy) Interior and perimeter landscaping (shade) Buffer screening and parking lot screening (screen) Deciduous buffer element (street, canopy, shade) Buffer shrub element (shrub or screen) | ||
Acceptable Trees and Shrubs | ||
Common Name | Scientific Name | Types of Landscaping Permitted |
Amur maple | Acer ginnala | Street, shade, canopy, ornamental |
European hornbeam | Carpinus betulus | Street, shade, canopy, ornamental |
Hop hornbeam | Ostrya virginiana | Street, shade, canopy, ornamental |
Katsura tree | Cercidiphyllum japonicum | Street, shade, canopy, ornamental |
Ginkgo (male) | Ginkgo biloba | Street, shade, canopy, ornamental |
Thornless honey locust | Gleditsia triacanthos inermis | Street, shade, canopy, ornamental |
Golden rain tree | Koelreuteria paniculata | Street, shade, canopy, ornamental |
Flowering crabapple | Malus (disease-resistant varieties) | Street, shade, canopy, ornamental |
Chinese Pistache | Pistacia chinensis | Street, shade, canopy, ornamental |
Linden | Tilia (all varities) | Street, shade, canopy, ornamental |
Lacebark elm | Ulmus parvifolia | Street, shade, canopy, ornamental |
Japanese Zelkova | Zelkova serrata | Street, shade, canopy, ornamental |
Red oak | Quercus rubra | Street, shade, canopy, ornamental |
White oak | Quercus alba | Street, shade, canopy, ornamental |
Scarlet oak | Quercus coccinea | Street, shade, canopy, ornamental |
Sawtooth oak | Quercus acutissima | Street, shade, canopy, ornamental |
Kentucky coffeetree | Gymnocladus dioicus | Street, shade, canopy, ornamental |
Dawn redwood | Metasequoia glyptostroboides | Street, shade, canopy |
Swamp chestnut oak | Quercus michauxii | Street, shade, canopy |
Willow oak | Quercus phellos | Shade, canopy, ornamental |
Bald cypress | Taxodium distichum | Street, shade, canopy |
Red maple | Acer rubrum | Shade, canopy, ornamental |
Freeman maple | Acer freemanii | Shade, canopy, ornamental |
Sugar maple | Acer saccharum | Shade, canopy, ornamental |
Paperbark maple | Acer griseum | Shade, canopy, ornamental |
American sycamore | Platanus occidentalis | Shade, canopy, ornamental |
London plane tree | Platanus acerifolia | Shade, canopy, ornamental |
Sweetgum | Liquidambar styraciflua | Shade, canopy, ornamental |
Copper beech | Fagus sylvatica 'Riversii' | Shade, canopy, ornamental |
Weeping beech | Fagus pendula | Shade, canopy, ornamental |
European beech | Fagus sylvatica | Shade, canopy, ornamental |
River birch | Betula nigra | Shade, canopy, ornamental |
Star magnolia | Magnolia stellata | Shade, canopy, ornamental |
Saucer magnolia | Magnolia x soulangiana | Shade, canopy, ornamental |
Black gum | Nyssa sylvatica | Shade, canopy, ornamental |
Yellowwood | Cladrastis kentukea | Shade, canopy, ornamental |
Downy serviceberry | Amelanchier arborea | Shade, canopy, ornamental |
Hawthorn | Crataegus plaenopyrum, Crataegus viridis | Shade, canopy, ornamental |
Sourwood | Oxydendrum arboreum | Shade, canopy, ornamental |
Tuliptree | Liriodendron tulipifera | Shade, canopy, ornamental |
Pawpaw | Asimina triloba | Shade, canopy, ornamental |
Dogwood | Cornus florida, Cornus kousa, Cornus hybrid | Shade, ornamental |
Flowering cherry | Prunus (all varieties of flowering cherry) | Shade, ornamental |
Cornelian cherry | Cornus mas | Shade, ornamental |
Eastern redbud | Cercis canadensis | Shade, ornamental |
American plum | Prunus americana | Shade, ornamental |
Japanese maple | Acer palmatum | Shade, ornamental |
Douglas fir | Pseudotsuga menziesii | Screen, ornamental |
White fir | Abies concolor | Screen, ornamental |
Spruce | Picea (all varieties) | Screen, ornamental |
Japanese umbrella pine | Sciadopitys verticillata | Screen, ornamental |
Hinoki false cypress | Chamaecyparis obtusa | Screen, ornamental |
White pine | Pinus strobus | Screen, canopy |
Western arborvitae | Thuja plicata | Screen, ornamental |
Eastern arborvitae | Thuja occidentalis (all varieties) | Screen, ornamental |
Japanese cedar | Cryptomeria japonica | Screen, ornamental |
Viburnum (evergreen) | (All evergreen/semi-evergreen varieties) | Screen, ornamental, shrub |
Yew | Taxus (all varieties) | Screen, ornamental, shrub |
Holly | Ilex (all varieties) | Screen, ornamental, shrub |
Common boxwood | Buxus sempervirens | Screen, ornamental, shrub |
Juniper | Juniperus (all varieties) | Screen, ornamental, shrub |
Abelia | (All varieties) | Screen, ornamental, shrub |
Witchhazel | Hamamelis vernalis | Ornamental, shrub |
White fringetree | Chionanthus virginicus | Ornamental, shrub |
Slender Deutzia | Deutzia gracilis | Ornamental, shrub |
Althea | Hibiscus syriacus | Ornamental, shrub |
Vicary privet | Liqustrum x vicaryi | Ornamental, shrub |
Sweet mockorange | Philadelphus coronarius | Ornamental, shrub |
Japanese Pieris | Pieris japonica | Ornamental, shrub |
Cotoneaster | (All varieties) | Ornamental, shrub |
Spirea | (All varieties) | Ornamental, shrub |
Weigela | (All varieties) | Ornamental, shrub |
Forsythia | (All varieties) | Ornamental, shrub |
Dwarf Fothergilla | Fothergilla gardenii | Ornamental, shrub |
Buttonbush | Cephalanthus occidentalis | Ornamental, shrub |
Japanese pagodatree | Sophora japonica | Ornamental, shrub |
Chastetree | Vitex agnus-castus | Ornamental, shrub |
Standard Nandina | Nandina domestica | Ornamental, shrub |
Purple plum | Prunus cerasifera | Ornamental |
Crape myrtle | Lagerstroemia indica | Ornamental |
Persian Parrotia | Parrotia persica | Ornamental |
Hydrangea | (All varieties) | Ornamental |
Mugo pine | Pinus mugo | Ornamental |
Itea | (All varieties) | Ornamental |
Aronia | (All varieties) | Ornamental |
Clethra | (All varieties) | Ornamental |
Azalea | Rhododendron (all varieties) | Ornamental |
Rhododendron | (All varieties) | Ornamental |
Northern bayberry | Myrica pennsylvanica | Ornamental |
Meyer lilac | Syringa meyeri 'Palibin' | Ornamental |
Note: Bradford pears and all varieties of ornamental flowering pears are prohibited from being used to fulfill planting or substitute planting requirements. |
(2)
Planting procedure. All required trees and shrubs shall meet the specifications and procedures established by the American Nursery and Landscape Association.
(a)
All trees shall be planted no closer than three feet to the edge of sidewalks, curb or other pavement.
(b)
Deciduous trees shall be a minimum of one-and-one-quarter-inch caliper at the time of planting.
[Amended 12-11-2019]
(c)
Only single-stem trees shall be planted as street trees.
(d)
Evergreen trees shall be a minimum of four feet in height at the time of planting. Shrubs shall be a minimum three-gallon container at the time of planting. In addition to the three-gallon container requirement, parking lot headlight screening shrubs shall be a minimum of 36 inches in height at time of planting (unless topography allows a reduction to maintain 36 inches from pavement to top of shrub), and buffer shrubs shall be a minimum of 18 inches in height at time of planting. Spacing of parking lot screening shrubs shall be four feet on center.
[Amended 12-11-2019]
(e)
Trees shall not be planted within easements for water, sewer, electric, or gas.
[Amended 12-11-2019]
(f)
Measurement of size. Caliper is measured six inches above the ground up to and including four-inch caliper size and 12 inches above the ground for larger sizes. Diameter at breast height (dbh) will be measured at the height of 54 inches from the base of the trunk or as otherwise allowed in the Guide for Plant Appraisal.
(3)
Maintenance. The owner, developer, and/or builder who is responsible for planting required landscaping shall be responsible for maintaining it in a state of good health for one year after planting. After one year, from the date occupancy is approved, the individual property owner and/or homeowner's association shall become responsible for maintenance. As long as the intent of this section is met, the Zoning Administrator may waive the requirement for landscaping on individual building lots when a hazard or nuisance exists.
C.
Existing tree credits. If the intent of § 165-203.01 is satisfied, including species type and location, existing trees that are preserved may be counted towards the total number of required trees for residential developments. Commercial and industrial developments may utilize existing tree credits when calculating the required number of parking lot trees, as required in § 165-202.01D(13), if the preserved trees are shown on an approved site plan and serve the intent of interior and perimeter landscaping. The following table shows the credit given for each preserved tree, based on the tree's caliper:
Caliper (inches) | Tree Credit |
|---|---|
4 to 6 | 1 |
7 to 12 | 2 |
13 to 18 | 3 |
19 to 29 | 4 |
Greater than 30 | 5 |
D.
Enforcement procedures. The Zoning Administrator may require a bond with surety or other acceptable guaranties to insure the completion of required improvements. Such guaranties shall be in the estimated amount of the required improvements. Such guaranties shall be for a period of completion set by the Zoning Administrator with consultation with the applicant. Such guaranties shall be released when the required improvements have been completed.