DELAWARE DOT NATIVE PLANT TEST-PLOTS 2/2000

**---Susan Barton, Dept. of Plant &
Soil Sciences, Univ. of Delaware, Townsend Hall, Newark, Delaware
19717 - Email: sbarton@udel.edu - Phone (302) 831-1375**

**---Gary Schwetz, Delaware Center for
Horticulture, 1810 N. Dupont St., Wilmington, DE 19806 Email:
gschweyz@dehort.org - Phone (302) 658-6262**

**---William F. Smith III, Delaware
Dept. of Transportation, P.O. Box 778, Dover, DE 19903 - Email:
WSmith@mail.dot.state.de.us - Phone (302) 760-2181
Native Plants for Roadsides workshop,
Wilmington, Delaware.
**

Asclepias incarnata ..............Plot 2, 5, 8

Asclepias tuberosa ...............Plot 3, 6

Aster novae-angliae ..............Plot 2, 6

Aster novae-belgii ...............Plot 2

Aster puniceus ...................Plot 2

Baptisia australis ...............Plot 3

Echinacea purpurea ...............Plot 6

Eupatorium colestinum ............Plot 2

Eupatorium fistulosum ............Plot 2, 5, 10

Eupatorium hyssopifolium .........Plot 3, 6

Helianthus angustifolius .........Plot 2

Hibiscus moscheutos ..............Plot 2, 8

Liatris spicata ..................Plot 3

Lobelia siphilitica ..............Plot 2

Oenothera fruiticosa Fyrverkeri ..Plot 3

Panicum virgatum .................Plot 5, 10, 22

Penstemon digitalis ..............Plot 3

Phlox carolina Miss Lingard ......Plot 3

Phlox paniculata .................Plot 3

Phlox pilosa Eco Happy Trails ....Plot 3

Pycnanthemum virginianum .........Plot 2

Schizachyrium scoparium ..........Plot 3, 6

Silphium laciniatum ..............Plot 3

Solidago nemoralis ...............Plot 5

Solidago rugosa Fireworks ........Plot 3, 22

Solidago rugosa ..................Plot 5

Solidago sp. .....................Plot 6

Solidago speciosa ................Plot 3

Sorghastrum nutans ...............Plot 10

Sorghastrum nutans Sioux Blue ....Plot 1, 3

Sporobolus heterolepis ...........Plot 3

Verbena hastata ..................Plot 2

Vernonia glauca ..................Plot 2, 3

Vernonia noveboracensis ..........Plot 1

Amsonia hubrichtii ........Plot 3, 11

Andropogon spp. ...........Plot 16

Andropogon ternarius ......Plot 11

Andropogon virginicus .....Plot 2, 3, 6, 7

Asclepias incarnata .......Plot 2, 8

Asclepias tuberosa ........Plot 1, 2, 3, 6, 7, 11, 15, 17, 18, 21

Aster divaricatus .........Plot 7

Aster laevis ..............Plot 1, 3, 11

Aster lateriflorus ........Plot 3, 6, 11

Aster novae-angliae .......Plot 2, 3, 6, 7, 8, 17, 18

Aster novae-belgii ........Plot 2, 8

Aster pilosus .............Plot 1, 3, 11, 15, 17, 18

Aster puniceus ............Plot 2, 8

Baptisia australis ........Plot 1, 2, 3, 8, 11

Baptisia lanceolata .......Plot 6

Bidens polylepis ..........Plot 2, 8

Bromus latiglumus .........Plot 6

Carex stricta .............Plot 2, 8

Chysanthemum leucanthemun .Plot 6

Coreopsis lanceolata ......Plot 3, 6, 11

Echinacea pallida .........Plot 6

Echinacea purpurea ........Plot 1, 3, 6, 11

Elymus hystrix ............Plot 6

Eragrostis spectabilis, ...Plot 2, 3, 6, 7, 11

Eryngium yuccifolium ......Plot 6

Eupatorium capillifolium ..Plot 16

Eupatorium coelestinum ....Plot 2, 8

Eupatorium fistulosum .....Plot 2, 8

Eupatorium hyssopifolium ..Plot 1, 2, 6, 7, 11, 16, 17, 18

Eupatorium perfoliatum ....Plot 2, 8

Festuca ovina v.dur. ......Plot 6

Festuca ovina .............Plot 6

Festuca rubra .............Plot 6

Gnaphalium obtusifolium ...Plot 16

Heleopsis helianthoides ...Plot 6

Helianthus annuus .........Plot 6

Hibiscus moscheutos .......Plot 2, 8

Juncus effusus ............Plot 2, 8

Liatris spicata ...........Plot 1, 3, 6, 7, 11

Lobelia cardinalis ........Plot 2, 8

Lobelia siphilitica .......Plot 2, 8

Lolium multiforum .........Plot 6

Monarda fistulosa .........Plot 6

Oenothera speciosa ........Plot 3, 11

Oenothera tetragona .......Plot 2, 3, 8, 11

Panicum virgatum ..........Plot 2, 7, 8, 15, 17, 18, 21

Penstemon digitalis .......Plot 1, 3, 6, 11

Phlox paniculata ..........Plot 3

Ratibida pinnata ..........Plot 6

Rudbeckia hirta ...........Plot 1, 2, 3, 6, 7, 11, 15, 17, 18, 21

Schizachyrium scoparium ...Plot 1, 2, 3, 6, 7, 11, 16

Scirpus cyperinus .........Plot 2, 8

Senecio spp. ..............Plot 6

Silphium laciniatum .......Plot 3

Solidago altissima ........Plot 6

Solidago graminifolia .....Plot 6

Solidago nemoralis ........Plot 2, 3, 6, 7, 11

Solidago rugosa ...........Plot 1, 2, 15, 17, 18

Solidago sempervirens .....Plot 16

Solidago speciosa .........Plot 3, 6, 11

Solidago tenuifolium ......Plot 16

Sorghastrum nutans ........Plot 1, 2, 3, 6, 15, 17, 18, 21

Sporobolus heterolepis ....Plot 3, 6, 11

Verbena hastata ...........Plot 2, 8

Vernonia noveboracensis ...Plot 1, 2, 3, 8

Veronica fasciculata ......Plot 6

`Acer rubrum..................Juniperus virginiana
Alnus serrulata..............Leucothoe racemosa
Amelanchier canadensis.......Liquidambar styraciflua
Aronia arbutifolia...........Magnolia virginiana
Baccharis halimifolia........Myrica pennsylvanica
Betula nigra.................Nyssa sylvatica
Cephalanthus occidentalis....Prunus maritima
Cercis canadensis............Quercus imbricaria
Chionanthus virginica........Rhus glabra
Clethra alnifolia............Rhus typhina
Cornus florida...............Sassafras albidum
Cornus sericea...............Vaccinium corymbosum
Crataegus Winter King........Viburnum dentatum
Ilex opaca...................Viburnum prunifolium`

**DELAWARE DOT - JAN 2000
TEST-PLOT LOCATIONS
PLOT 1 -** Location: I-95 southbound,
Newark/Middletown exit 1 mile. Size: 35 x 320 ft. Environment:
full sun, dry, coastal plain, part slope, SSE exposure Existing
conditions: The woody background of existing vegetation includes
many desirable native species such as sweetgum, sumac and red
maple.

PLOT 2

Location: I-95 southbound, median area near 141. Size: 200 x 75. Environment: full sun, dry/wet, coastal plain Existing conditions: A large alcove of mowed grass is surrounded by a wood edge on one side and a mass of cattails on the other side. A weeping willow and large expanse of un-mowed grass provide a pastoral background.

PLOT 6b

PLOT 9

PLOT 10

PLOT 11

PLOT 12

PLOT 16

PLOT 17

PLOT 18

PLOT 19

PLOT 20

PLOT 22

**East Coast general plant habitats, according to Nathaniel
Lord Britton & Addison Brown in "An Illustrated Flora
of the Northern US and Canada" (1913):**

`Alpine summits.................Moist woods and meadows
Dry sand soil..................Roadsides
Dry soils......................Saline soil
Dry woods......................Sea shores
Fields.........................Swamps
Moist sandy soil...............Waste places (exotics)
Moist soils....................Woods and thickets
`

**Information on this web site supplied by Gary Schwetz, Program
Manager **(retired)**, Delaware Center for Horticulture, 1810
N. Dupont St., Wilmington, DE. 19806 Phone in 2000 was (302) 658-6262
for more information.**