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The requirements regarding planting are almost as varied as development disturbance that initiate them.
Plantings are used as mitigation in the Resource Conservation Areas and the Limited Development Areas.
While they may be used as part of the process to improve the post development water quality by ten percent,
they do not provide for full compliance in the Intensely Developed Area. Below are listed a variety of
compatible and native species and graphics explaining the planting and care of trees and shrubs.
It should be noted that the use of native plant species is strongly encouraged. While non-native and
even exotic species may be aesthetically pleasing, the intent for required planting is to provide for a more
natural vegetated cover, similar to what exists in the wild. This provides for improved water quality,
habitat for native wildlife and protects against the proliferation of undesirable vegetation, because it
does not have natural controls.
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PLANTING AND MAINTENANCE STANDARDS
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| 1. Plant in the early spring or fall when temperatures are cool and evaporation and transpiration rates for plants are low.
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2. Mulch the area over the roots with a maximum of 2 inches of mulch. Do not mound mulch around the base of the tree since mounding causes stem cranker and rot.
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3. Remove weeds before they get too large since they use water needed by the new trees.
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4. As plants become established, increase the time between waterings. As roots grow less frequest watering will be required.
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5.Water only when the ground is dry. Stick a pencil into the ground to a depth of 4 to 6 inches. If the tip is damp, then no watering is necessary.
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6. Do not let the water run off the landscape while you are watering. This will waste water and money. In order to prevent surface runoff (water leaving the planted area), restict the rate of flow to the point at which the soil can absorb water.
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7. Water early in the morning. Daytime watering especially when its
sunny or windy, increases the amount of water lost to evaporation( as much as 40% of water applied
can be lost). Evening watering does not allow plant surfaces to dry and will encourage the spread of
diseases such as powdery mildew. |
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8.Do not run into plants with lawn mowers or string trimmers because
this may leave large cuts at the base of the plants and cause infection which could eventually lead to the
death of the plant.
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9.Use tree shelters for seedling because these durable polypropylene tubes
act as a miniature "greenhouse" for your seedlings. They also protect against weather, animals and damage that could
be caused by mowers or string trimmers.
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It has been determined by research and observation that a Buffer that contains trees (canopy layer),
smaller trees and shrubs (under story layer) and a vigorous ground cover (herbaceous layer) will better
protect the water quality of the abutting stream or water body. Not only do the trees help remove
nutrients from stormwater entering a natural water body, thus providing less nutrients for undesirable aquatic vegetation,
they also shade the water. This helps provide optimum temperature for fish and other aquatic life. Also,
in planning developments within the Critical Area care must be taken to provide a means for wildlife to
pass from one area to another. Strips, if connecting forest, called wildlife corridors should be made a part of the overall
development plan. However the individual property owner also needs to be sensitive to these corridors
and not allow them to be compromised where they cross a residential lot. As an additional benefit to the
homeowner, it is said that a mature tree provides as much cooling as a small window air conditioner due
to transpiration. This is in addition to the shade that they afford.
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One of the mandates for planting is the introduction of impervious surface (basically any surface that
will shed rather than absorb water) onto a lot. For most properties this impervious surface limit is 15 %
of the portion of the lot above mean high tide. On residential lots of less than ½ acre and nonresidential
lots of less than ¼ acre, this limit is 25%, providing the lot was zoned for or in this use before 12/1/1985.
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Another is the clearing of forested areas. There are replanting requirements depending upon the percentage
of the lot cleared. Most people deal with these two planting issues, however when one proposes to subdivide
property, 15% of the entire area must be planted. This is often accomplished in the plantation spacing of
8'x8'. This same spacing may also be used in the mitigation plantings for impervious surface. For example,
a 2000 square foot home (footprint) with a 600 square foot garage, 1250 square feet of driveway and walks
and a small garden shed of 100 square feet comprise a total impervious surface of 3950 square feet. This is
divided by 64 square feet (8'x8' spacing). This figure 62 plus the constant of 47, which represents the
disturbance of the septic tank and drain field equals 109 trees that must be planted on site. If the lot is
just too small, planting offsite or a payment of a fee in lieu can be substituted, but only is room does not
exist on the lot. Staff from the Department of Technical and Community Services visits the planted areas to
verify that the afforestation has been carried out in accordance with the plan submitted with the development
proposal. It is required that 90% of the plants be alive at the end of the second growing season after development.
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| RECOMMENDED PLANTINGS ACCORDING TO SITE CONDITIONS |
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| Although it is up to the individual applicant to choose plantings from the
list of native species, he or she should be aware that the various conditions in Somerset may call for certain
species in order to survive and meet the survival requirements of the program. The following list organizes
recommended species that are likely to thrive under some of the common conditions in Somerset County.
Additional questions can be directed to the Department. |
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| Wet sites,
ponds, wet edges: |
6.7.04 |
| Shrubs: |
Common Name |
Scientific Name |
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Black Chokeberry |
Aronia Melanocarpa |
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Dangleberry |
Gaylussacia Frondosa |
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Dense St. Johns Wort |
Hypericum Densiflorum |
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Sheep Laurel |
Kalmia Angustifolia |
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Allegheny Blackberry |
Rubus Allegheniensis |
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Red Chokeberry |
Aronia Arbutifolia |
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High-Tide Bush |
Baccharis Halimifolia |
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Buttonbush |
Cephalanthus Occidentalis |
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Winterberry Holly |
Ilex Verticillata |
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Virginia Sweetspire (Willow) |
Itea Virginica |
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Swamp Azalea |
Rhododendron Viscosum |
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Swamp Rose |
Rosa Palustris |
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Common Elderberry |
Sambucus Canadensis |
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Smooth Alder |
Alnus Serrulata |
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Sweetbay Magnolia |
Magnolia Virginiana |
|
Black Haw Virburnum |
Viburnum Prunifolium |
| Trees: |
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Box Elder |
Acer Negundo |
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Red Maple |
Acer Ruburm |
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Silver Maple |
Acer Saccharinum |
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River Birch |
Betula Nigra |
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Bitternut Hickory |
Carya Cordiformis |
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Pignut Hickory |
Carya Glabra |
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Hackberry |
Celtis Occidentalis |
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Green Ash |
Fraxinus Pennsylvanica |
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Sweet Gum |
Liquidambar Styraciflua |
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Black Gum |
Nyssa Sylvatica |
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Loblolly Pine |
Pinus Taeda |
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American Sycamore |
Platanus Occidentalis |
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Eastern Cottonwood |
Populus Deltoides |
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Pin Oak |
Quercus Palustris |
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Swamp White Oak |
Quercus Bicolor |
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Swamp Chestnut Oak |
Quercus Michauxii |
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Willow Oak |
Quercus Phellos |
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Black Willow |
Salix Nigra |
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Silky Willow |
Salix Sericea |
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Bald Cypress |
Taxodium Distichum |
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Arrow-Wood |
Viburnum Dentatum |
| Grasses: |
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Virginia Switchgrass |
Panicum Virgatum |
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Red Fescue |
Festuca Rubra |
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Tussock Sedge |
Carex Stricta |
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Gama Grass |
Tripsacum Dactyloides |
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Cutleaf Coneflower |
Rudbeckia Lancinata |
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Great Blue Lobelia |
Lobelia Siphilitica |
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Cardinal Flower |
Lobelia Cardinalis |
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| Dry, sunny
forest conditions: |
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| Shrubs: |
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Dangleberry |
Gaylussacia Frondosa |
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Dense St.John's Wort |
Hypericum Densiflorum |
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Sheep Laurel |
Kalmia Angustiflolia |
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Pasture Rose |
Rosa Carolina |
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Maple-Leaved Arrowwood |
Viburnum Acerifolium |
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Red Chokeberry |
Aronia Arbutifolia |
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Witch Hazel |
Hamamelis Virginiana |
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Wax Myrtle |
Myrica Cerilera |
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Smooth Sumac |
Rhus Glabra |
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Highbush Blueberry |
Vaccinium Corymbosum |
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Southern Arrowwood |
Viburnum Dentatum |
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Possum Haw |
Ilex Decidua |
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Mountain Laurel |
Kalmia Latifolia |
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Shining Sumac |
Rhus Copallina |
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Staghorn Sumac |
Rhus Typhina |
| Trees: |
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White Fringetree |
Chionanthus Virginiucus |
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Cockspur Hawthorn |
Crataegus Crus-Galli |
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Eastern Red Cedar |
Juniperus Virginiana |
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Pignut Hickory |
Carya Glabra |
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Common Persimmon |
Diospyros Virginiana |
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Black Gum |
Nyssa Sylvatica |
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Shortleaf Pine |
Pinus Echinata |
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Pitch Pine |
Pinus Rigida |
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Virginia Pine |
Pinus Virginiana |
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Chestnut Oak |
Quercus Prinus |
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Northern Red Oak |
Quercus Rubra |
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Black Oak |
Quercus Velutina |
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Black Locust |
Roninia Pseudoaceaia |
| Grasses: |
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Broomsedge |
Andropogon Virginius |
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Canada Wild Rye |
Elymus Canadensis |
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Bottlebrush Grass |
Elymus hystrix |
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Coastal Panic Grass |
Panicum Amarum |
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Little Bluestem |
Schizachyrium Scoparium |
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Indiangrass |
Sorghasturm Nutans |
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| Partial shady,
forest conditions (dry to moist) |
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| Shrubs: |
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Black Huckleberry |
Gaylussacia Baccata |
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Sheep Laurel |
Kalmia Angustifolia |
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Stagger-Bush |
Lyonia Mariana |
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Coast Azalea |
Rhododendron Atlanticum |
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Maple-Leaved Arrowwood |
Viburnum Acerifolium |
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Beautyberry |
Callicarpa Americana |
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Sweet Aepperbush |
Clethra Alnifolia |
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Witch Hazel |
Hamamelis Virginiana |
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Fetterbush |
Leucothoe Racemosa |
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Spicebush |
Lindera Benzoin |
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Male-Berry |
Lyonia Ligustrina |
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Wax Myrtle |
Myrica Cerifera |
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Northern Bayberry |
Myrica Pensylvanica |
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Southern Arrowwood |
Viburnum Dentatum |
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Possom Haw |
Ilex Decidua |
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Mountain Laurel |
Kalmia Latifolia |
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Shining Sumac |
Rhus Copallina |
| Trees: |
|
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Serviceberry |
Amelanchier Canadensis |
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Chinquapin |
Castenea Pumila |
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Eastern Redbud |
Cercis Canadensis |
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White Fringetree |
Chionanthus Virginicus |
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Flowering Dogwood |
Cornus Florida |
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Cockspur Hawthorn |
Crataegus Crus-Galli |
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Sweetbay Magnolia |
Magnolia Virginiana |
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Hop-Hornbeam |
Ostrya Virginiana |
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Southern Crabapple |
Pyrus Angustifolia |
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Sassafras |
Sassafras Albidum |
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Mockernut Hickory |
Carya Alba |
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Pignut Hickory |
Cary Glabra |
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Common Persimmon |
Diospyros Virginiana |
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Black Gum |
Nyssa Sylvatica |
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Chestnut Oak |
Quercus Prinus |
|
Northern Red Oak |
Quercus Rubra |
| Grasses: |
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Blue Wood Sedge |
Carex Glaucodea |
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Sedge |
Carex Pensylvanica |
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Wild Oats |
Chasmanthium Latilolium |
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Bottlebrush Grass |
Elymus Hystrix |
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Virginia Wild Rye |
Elymus Virginicus |
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| Salt tolerent
plant species |
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| Trees: |
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Willow Oak |
Quercus Phellos |
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Bald Cypress |
Taxodium Distichum |
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Common Persimmon |
Diospyros Virginiana |
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Loblolly Pine |
Pinus Teda |
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Eastern Red Cedar |
Juniperus Virginiana |
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Red Oak |
Quercus Rubrum |
|
White Oak |
Quercus Alba |
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Black Cherry |
Prunus Serotina |
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Seaside Alder |
Alnus Maritima |
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Choke Cherry |
Aronia Arbutifolia |
| shrubs: |
Bayberry |
Myrica Pensylvanica |
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Highbush Bluberry |
Vaccinium Corymbosum |
|
Low Blueberry |
Vaccinium Vacillans |
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Sweet Mockorange |
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Pyracantha |
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Virginia Creeper |
Parthenocissus Quinquefolia |
| grasses: |
Switch Grass |
Panicum Virgatum |
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Big Cordgrass |
Spartina Cynosuroides |
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Bluejoint |
Calamagrostis Canadensis |
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Common Three-Square |
Scirpus Spp. |
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Panic Grass |
Dichanthelium Spp. |
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Rushes |
Juncus Spp. |
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Salt Meadow Hay |
Spartina Patens |
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Salt Grass |
Distichlis Spicata |
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Sedges |
Carex Spp. |
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Smooth Cordgrass |
Spartina Alterniflora |
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Wild Rice |
Zizania Aquatica |
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Seaside Goldenrod |
Solidago Sempervirens |
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Hydrangia |
Hydrangia Arborescens |
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| NOXIOUS SPECIES |
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|
HERBACEOUS PLANTS
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COMMON NAME | SCIENTIFIC NAME | COMMON NAME | SCIENTIFIC NAME |
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| Garlic Mustard |
Alliara officinalis |
Day-lilly |
Hernerocallis fulva |
| |
Arthraxon hispidus |
Purpe Loosestrife |
Lythrum glatum |
| Musk(nodding)thistle |
Carduus nutans |
Moneywort |
Lysimachia nummularia |
| Plumeless thistle |
Carduus accanthoides |
|
Myoston aquaticum |
| Spotted knapweed |
Centuria maculosa |
Wild reed |
Phragmites australis |
| Bull thistle |
Cirsium vulgare |
Japanese knotweed |
Polygonum |
| Canada thistle |
Cirsium arvense |
Asian teathumb |
Polygonum perfoliatum |
| Crown vetch |
Coronilla varia |
Russian thistle |
Salsoia iberica |
| Beefsteak Mint |
Eulalia vimineus |
Johnson grass |
Sorgum hatepense |
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|
Cocklebur |
Xanthium spp. |
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| VINES |
| Porcelain Berry |
Ampelospsis brevipedunculata |
Oriental Bettersweet |
Celastrus orbiculatus |
| Climbing Eyonymus, Wintercreeper |
Euonymus fortunei |
English Ivy |
Hedera helix |
| Japanese Honeysuckle |
Lonicerca japonica |
Kudzu |
Pueraria jobata |
| Periwinkle |
Vinca minor |
Wisteria |
Wisteria floribunda, W. sinensis |
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| SHRUBS |
| Japanese Barberry |
Berberis thunbergii |
Common Buckthorn |
Rhamnus Cathartica |
| Russian Olive |
Eleagnus angustifolium |
Autumn Olive |
Eleagnnus umbellata |
| Multiflora Rose |
Rosa multiflora |
Winged Euonymus, Winged Wahoo |
Euonymus alatus |
| Strawberry-raspberry, balloonerry |
Rubus Illecebrosus |
Privet |
Ligustrum sp. |
| Wineberry |
Rubus phoenicolasius |
Japanese Spiraea |
Spiraea laponica |
Bush Honeysuckles,include Belle Honeysuckle Amur Honeysuckle Morrow's Honeysuckle Tartarian Honeysuckle |
Lonicera sp. Lonicera x bella Lonicera maackii Lonicera morrowii Lonicera tatarica |
Coralberry |
Symphorlcarpos orbiculatus |
| TREES |
| |
| Norway Maple |
Acer platanoides |
Tree of Heaven |
Ailonthus altissima |
| (Catalpa |
catalpa sp)* |
Russian Olive |
Eleagnus angustifolia |
| (White Mulberry |
Morun alba)* |
Empress Tree |
Paulownia tomentosa |
| (White Spruce |
Picea glauca) |
Sweet Cherry,bird Cherry |
Prunus avlum |
*Species in parentheses are minor problems. |
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| FOR MORE INFORMATION ON INVASIVE SPECIES |
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| USDA-NRCS PLANTS Database - Fact Sheets |
| http://plants.usda.gov/ |
| Information on invasive and noxious plants |
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| USDA - Animal and Plant Health Inspection Service - Plant Protection & Quarantine |
| http://www.aphis.usda.gov/ppq./weeds |
| Information on preventing the introduction of invasive species |
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| The Nature Conservancy - Weeds on the Web |
| http://tncweeds.ucdavis.edu/ |
| Control information on specific invasives - Weed Control Methods Handbook |
| http://www.tncfire.org |
| Fire Management Program |
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| National Biological Information System |
| http://www.invasivespecies.gov |
| Gateway to Federal Efforts - Impacts and responses to the National Invasive Species Council |
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| Rutgers University |
| http://www.rce.rutgers.edu/weeds/index.html |
| Photographs and control methods for invasive species |
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| Southeastern Exotic Pest Plant Council |
| http://.se-eppc.org |
| Also has link to the Mid Atlantic Exotic Pest Plant Council (MA-EPPC) |
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| National Park Service - Plant Conservation Alliance |
| http://www.nps.gov/plants/ |
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| Bureau of Land Management Weeds Website |
| http://www-a.blm.gov/weeds |
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University of Maryland Extension Service - Home and Garden Information Center - Invasives Species Alert
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| http://www.agnr.umd.edu/users/hgic/ |
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| Non-native Plants of Delaware |
| http://www.dnrec.state.de.us/fw/weeds/htm |
| List of non-native (alien or exotic) species |