18E.40.070 – Appendix A Abbreviated Planting Plan
When required, Abbreviated Planting Plans shall be submitted with a site development or building permit application. The Plan shall compensate for the additional impervious area within the buffer by planting native tree, shrub, and groundcover vegetation within an area equal to the area of expansion. Plans shall consist of a site diagram identifying the following (see example on following page):
1. The expansion footprint; where will the expansion occur?
2. The square footage of the expansion; how many square feet of expansion will occur?
3. The location of an equal area, or areas, to be planted.
4. The number of tree, shrub, and groundcover species to be planted. The planting plan shall include no less than one tree species, two shrub species, and two groundcover species. Table 18E.40.070-1 provides a list of native plants that may be suitable for planting.
5. Number of plants to be installed. Use these calculations to determine the total number of plants needed. See example planting plan on following page.
Plant Type |
Spacing |
Number of Plants = Square Footage divided by: |
---|---|---|
Trees |
12-15 feet on-center |
144 – 225 square feet |
Shrubs |
6 feet on-center |
36 square feet |
Herb/Groundcover |
3 feet on-center |
9 square feet |
6. Monitoring. The applicant shall provide photos showing the planting area prior to planting and at 6, 12, and 24 months post-planting.
The proposed expansion = 420 sq.ft.
Trees: |
420 sq. ft. / 144 sq. ft. = 2.9 trees (round up to 3 trees) |
Shrubs: |
420 sq. ft. / 36 sq. ft. = 11.6 shrubs (round up to 12) |
Herb/Groundcover: |
420 sq. ft. / 9 sq. ft. = 46.6 herb/groundcover (round up to 47) |
Summary To compensate for the additional 420 square feet of encroachment into the buffer, 3 trees (1 or more species), 12 shrubs (2 or more species), and 47 herb/groundcover plants (2 or more species) are to be installed.
|
Approximate Height |
Full Sun |
Part Sun/ Shade |
Full Shade |
Drought Tolerant |
Wetlands |
Buffers |
|
---|---|---|---|---|---|---|---|---|
Evergreen Trees |
||||||||
Douglas fir |
Pseudotsuga menziesii |
100-250' |
X |
X |
X |
X |
||
grand fir |
Abies grandis |
100-250' |
X |
X |
X |
|||
Madrone |
Arbutus menziesii |
30-50' |
X |
X |
X |
X |
||
shore pine |
Pinus contorta |
15-50' |
X |
X |
X |
X |
X |
|
Sitka spruce |
Picea sitchensis |
100-210' |
X |
X |
X |
X |
||
western hemlock |
Tsuga heterophylla |
225' |
X |
X |
X |
X |
||
western red cedar |
Thuja plicata |
200' |
X |
X |
X |
X |
X |
X |
western white pine |
Pinus monticola |
80-130' |
X |
X |
X |
X |
||
western yew |
Taxus brevifolia |
6-45' |
X |
X |
X |
|||
Deciduous Trees |
||||||||
bigleaf maple |
Acer macrophyllum |
40-100' |
X |
X |
X |
|||
bitter cherry |
Prunus emarginata v. mollis |
20-50' |
X |
X |
X |
X |
||
black cottonwood |
Populus balsamifera v. trichocarpa |
100-200' |
X |
X |
X |
X |
||
choke cherry |
Prunus virginiana |
20-50' |
X |
X |
X |
X |
||
Garry oak (Oregon white oak) |
Quercus garryana |
75' |
X |
X |
X |
X |
||
Oregon ash |
Fraxinus latifoia |
40-80' |
X |
X |
X |
X |
||
Pacific crabapple |
Malus fusca (Pyrus fusca) |
40' |
X |
X |
X |
|||
Pacific willow |
Salix lucida spp. lasiandra |
40-60' |
X |
X |
X |
X |
||
Pacific dogwood |
Cornus nuttallii |
20-30' |
X |
X |
X |
X |
||
quaking aspen |
Populus tremuloides |
75' |
X |
X |
X |
X |
||
western red alder |
Alnus rubra |
30-120' |
X |
X |
X |
X |
X |
X |
Evergreen Shrubs |
||||||||
evergreen huckleberry |
Vaccinium ovatum |
3-5' |
X |
X |
X |
X |
X |
|
low Oregon grape |
Mahonia nervosa |
2' |
X |
X |
X |
X |
||
Pacific rhododendron |
Rhododendron macrophyllum |
24' |
X |
X |
X |
X |
||
salal |
Gualtheria shallon |
3-7' |
X |
X |
X |
X |
X |
|
tall Oregon grape |
Mahonia aquifolium |
5-10' |
X |
X |
X |
X |
||
Deciduous Shrubs |
||||||||
baldhip rose |
Rosa gymnocarpa |
6' |
X |
X |
X |
|||
beaked hazelnut |
Corylus cornuta |
20' |
X |
X |
X |
X |
X |
|
black gooseberry |
Ribes lacustre |
2-7' |
X |
X |
||||
black hawthorn |
Crataegus douglasii v. suksdorfii |
20-30' |
X |
X |
X |
X |
||
black twinberry |
Lonicera involucrata |
2-7' |
X |
X |
X |
X |
X |
|
blue elderberry |
Sambucus caerulea |
20' |
X |
X |
X |
|||
cascara |
Rhamnus purshiana |
35' |
X |
X |
X |
X |
X |
|
clustered wild rose |
Rosa pisocarpa |
8' |
X |
X |
X |
X |
X |
|
Hookers willow |
Salix hookeriana |
18' |
X |
X |
||||
Indian plum |
Oemleria cerasiformis |
5-16' |
X |
X |
X |
X |
X |
|
mock orange |
Philadelphus lewisii |
5-10' |
X |
X |
X |
|||
mountain ash |
Sorbus sitchensis |
3-12' |
X |
X |
X |
X |
||
Nootka rose |
Rosa nutkana |
2-8' |
X |
X |
X |
X |
||
oceanspray |
Holodiscus discolor |
15' |
X |
X |
X |
X |
||
orange honeysuckle |
Lonicera ciliosa |
18' |
X |
X |
X |
|||
Pacific ninebark |
Physocarpus capitatus |
6-13' |
X |
X |
X |
|||
red elderberry |
Sambucus racemosa |
20' |
X |
X |
X |
|||
red-flowering currant |
Ribes sanguineum |
3-12' |
X |
X |
X |
|||
red-osier dogwood |
Cornus sericea v.stolonifera |
15' |
X |
X |
X |
|||
salmonberry |
Rubus spectabilis |
3-10' |
X |
X |
X |
X |
X |
|
Scouler willow |
Salix scouleriana |
6-40' |
X |
X |
X |
X |
X |
|
serviceberry |
Amelanchier alnifolia |
10-12' |
X |
X |
X |
X |
||
Sitka willow |
Salix sitchensis |
3-26' |
X |
X |
X |
X |
||
snowberry |
Symphoricarpos albus |
2-6' |
X |
X |
X |
X |
||
stink currant |
Ribes bracteosum |
9' |
X |
X |
||||
thimbleberry |
Rubus parviflorus |
2-10' |
X |
X |
X |
|||
vine maple |
Acer circinatum |
25' |
X |
X |
X |
X |
||
Herbs and Groundcovers |
||||||||
bunchberry |
Cornus canadensis |
2-10" |
X |
X |
X |
X |
||
camas |
Camassia quamash |
35" |
X |
X |
X |
|||
coastal strawberry |
Fragaria chiloensis |
13" |
X |
X |
X |
X |
||
creeping mahonia |
Mahonia repens |
5-50" |
X |
X |
X |
X |
||
deer fern |
Blechnum spicant |
1-3' |
X |
X |
X |
X |
||
goat's beard |
Aruncus sylvester |
3-6' |
X |
X |
X |
|||
false lily-of-the-valley |
Maianthemum dilatatum |
3-12" |
X |
X |
X |
|||
false Solomon's seal |
Smilacina racemosa |
1-3' |
X |
X |
||||
kinnickinnick |
Arctostaphylos uva-ursi |
12" |
X |
X |
X |
X |
||
lady fern |
Athyrium filix-femina |
2-5' |
X |
X |
X |
X |
||
large leaf avens |
Geum macrophyllum |
3' |
X |
X |
X |
X |
X |
|
nodding onion |
Allium cernuum |
25" |
X |
X |
X |
|||
Pacific bleeding heart |
Dicentra formosa |
6-20" |
X |
X |
X |
|||
pearly everlasting |
Anaphalis margaritacea |
10-50" |
X |
X |
X |
X |
||
piggy-back plant |
Tolmiea menziesii |
20-40" |
X |
X |
X |
|||
seathrift |
Armeria maritima |
5-20" |
X |
X |
X |
|||
sword fern |
Polystichum munitum |
5' |
X |
X |
X |
X |
X |
|
twinflower |
Linnaea borealis |
5" |
X |
X |
||||
western columbine |
Aquilegia formosa |
2' |
X |
X |
X |
X |
||
western trillium |
Trillium ovatum |
6-18" |
X |
X |
X |
X |
||
wild ginger |
Asarum caudatum |
2-8" |
X |
X |
X |
|||
wild strawberry |
Fragaria virginiana |
13" |
X |
X |
X |
X |
||
wood fern |
Dryopteris expansa |
3' |
X |
X |
X |
X |
•This is not an inclusive list of all Northwest native plant species. In addition, many of the plant species listed above are commercially available in varieties that are not native to the northwest. It is required that the native varieties (identified by scientific names) be used in wetland and buffer areas. The native varieties may be difficult to find at standard nurseries. In this case, nurseries specializing in native plants should be contacted.
•Native species are adapted to this climate and tend to grow well here. However, as site conditions vary, so will the survival and growth rate of individual species. When feasible, supplemental irrigation of planted material during the first two growing seasons will greatly improve their chances of survival, especially those in full sun. Once established, these species do not require irrigation, but will grow faster when not stressed for water. Other factors influencing plant growth include proper planting, availability of sun and/or shade, soil condition, and availability of nutrients.
•Please do not remove plants from a wetland or buffer, or transplant them without prior approval from Pierce County Planning and Land Services.