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ST9904-PS030618NORTH TEXAS TOLLWAY AUTHORITY SYSTEM -WIDE DESIGN GUIDELINES Plant Palette Image SHADE /CANOPY TREES Common Name Shumard Oak Botanical Name Quercus shumardii Install Sizes 3 11 cal 1 1'T x 6'W 65 gal Mature Sizes 80'T x 80'W Accent Color fall foliage Remarks Does well in heavy clay soils and limestone Bur Oak Chinquapin Oak Live Oak Mexican Oak Cedar Elm Quercus macrocarpa Quercus muhlenbergii Quercus virginiona Quercus polymorpho Ulmus crossifolio 3 11 cal 1 PT x 6'W 65 gal 80'T x 80'W no Very drought re- sistant; will grow on limestone; reasonably fast - growing 3 11 cal 1 1'T x 6'W 65 gal 80'T x 80'W no Drought resistant 3 11 cal 1 1'T x 6'W 65 gal 60'T x 80'W no 3 11 cal 1 1'T x 6'W 65 gal 35'T x 45' W no 3 11 cal 1 VT x 6'W 65 gal 80'T x 60'W fall foliage Tolerant of poor conditions; mod- erate growth rate; prefers well - drained soil with medium moisture Drought tolerant; grow in dry lime- stone soils; handles reflected heat from pave- ment Drought tolerant; grow in dry lime- stone soils; handles reflected heat from pave- ment Bigtooth Maple Acer grandidentotum 3 11 cal 1 PT x 6'W 65 gal 50'T x 40'W fall foliage Drought toler ,ant; high heat tolerance; alkaline - adaptable; prefers sun to part sun June 18, 2003 68 Landscape/ Irrigation NORTH TEXAS TOLL WAY AUTHORITY SYSTEM -WIDE DESIGN GUIDELINES Plant Palette EVERGREEN TREES Image r. :LL - Common Name Eastern Red Cedar Leyland Cypress Blue Point Juniper Cherry Laurel Botanical Name Juniperus virginiono Cupressocyporis Juniperus chinensis Prunus coroliniona leylandii 'Blue Point' Install Sizes 7'T x 5'W 45 gal 10'T x 7'W 65 gal 4'T x 2'W 7 gal 6'T x 2.5'W 15 gal Mature Sizes 40'T x 20'W 50'T x 25'W 8'T x 4'W Accent Color no no soft blue foliage Remarks Drought tolerant; Grows in variety Medium -sized grows in any soil of soils; few if any pyramidal tree pest problems that prefers full sun 25'T x 15'W Prefers sandy, well- drained soils and full sun to partial shade; fast rate of growth June 78, 2003 69 Landscape/ Irrigation NORTH TEXAS TOLL WAY AUTHORITY SYSTEM -WIDE DESIGN GUIDELINES Plant Palette UNDERSTORY /ACCENT TREES Image Common Name Desert Willow Mesquite Mexican Plum Possumhaw Holly Red Bud Flame Leaf Sumac Waxmyrtle Botanical Name Chilopsis lineoris Prosopis glanduloso Prunus mexicano Ilex decidua Cercis conodensis Rhus lanceolate Myrica cerifera Install Sizes 3" cal 12'T x 5'W 5'T x 3'W 30 gal 3" cal 8'T x 5'W 7'T x 5'W 65 gal 3 "cal 9'T x 7'W 4'T x 3'W 5 gal 9'T x 5'W 65 gal 60 gal 65 gal 65 gal Mature Sizes 25'T x 15'W 30'T x 30'W 25'T x 25'W 20'T x 15'W 35'T x 45'W 20'T x 10'W 15'T x 10'W Accent Color summer flowers no spring flowers red winter berries spring flowers fall foliage no Remarks Drought tolerant; Highly drought re- Drought resistant; Drought tolerant; Drought resistant; Drought tolerant; Drought tolerant; no known pests of sistant; use in dry pest -free; grows in grows in any soil; will grow on must have open, grows in any soil; major concern place with poor limestone, black- female has red limestone sunny well- moderately fast soil or limestone; land, or sand berries all winter drained sites for growing may exceed 30' in best growth; best special conditions in mass plantings June 78, 2003 70 Landscape/ Irrigation NORTH TEXAS TOLL WA Y A UTHORITY SYSTEM -WIDE DESIGN GUIDELINES Plant Palette SHRUBS Image Common Name Abelia Botanical Name Abeliagrandifloro Install Sizes 15 "-18 "T x 15 " -18 "W 5 gal Mature Sizes 7'T x 7'W Accent Color summer flowers Tam Juniper Juniperus Sabina 'Tomanscifolia' 1 gal, 2 gal, or 5 gal 18 "T x 6' -8'W no Red Yucca Santolina Hesperaloe parviflora Santolina chamaecyparissus 15" -18 "T x 6" -8 11 T x 6 - 8 " W 12 "-15 "W 5 gal 1 gal 8'T x 8'W 2'T x 2'W Soft Yucca Yucca glorioso 30 "T x 30 "W 7 gal 5'T x 3'W summer flowers summer flowers summer flowers Remarks Drought tolerant; Tall groundcover Drought tolerant; use in any soil juniper; prefers use in any soil; sun or light shade; can handle requires good neglect drainage Drought resistant; Tough plant; will takes intense and grow almost reflected light; anywhere does best in well - drained, sandy, infertile soil Texas Sage Leucophyllum frutescens 18" -24 "T x 15 " -18 "W 5 gal 7'T x 7'W summer flowers Drought resistant; takes intense and reflected light June 18, 2003 71 Landscape/ Irrigation NORTH TEXAS TOLL WA Y AUTHORITY SYSTEM -WIDE DESIGN GUIDELINES Plant Palette Image Common Name Botanical Name Install Sizes TALL GRASSES Adagio Japanese Silver Grass Miscanthus sinensis 'Adagio' 4 pot, 1 gal, or 3 gal Mature Sizes 3.5' Tall Accent Color silvery foliage Remarks Prefers well - drained, moist soils in full sun; mow in winter Big Bluestem Andropogon gerardii vor. gerardii 4" pot, 1 gal, or 3 gal 5-6' Tall Flame Grass or Flame Miscanthus Miscanthus 'Purpurescens' 4 pot, 1 gal, or 3 gal 5' Tall Graziella Japa- nese Silver Grass Miscanthus sinensis 'Graziello' 4 pot, 1 gal, or 3 gal 5'-6' Tall pastel -blue foliage red fall foliage summer blooms Drought - tolerant; prefers well - drained clay or sandy soil in full or part sun; mow in winter Lime -green in summer, excellent fall standout; pre- fers well - drained moist soils; mow in late winter A more compact maiden grass with large white blooms in late summer; prefers full sun Indian Grass Sorghostrum nutons 4 pot, 1 gal, or 3 gal yellow fall tassels Drought tolerant; prefers well - drained soils in full sun; mow in winter June 78, 2003 72 Landscape/ Irrigation NORTH TEXAS T OLL WAY AUTHORITY SYSTEM -WIDE DESIGN GUIDELINES Plant Palette Image Common Name Botanical Name Install Sizes MEDIUM GRASSES Broomsedge Bluestem Andropogon virginicus 4 pot, 1 gal, or 3 gal Bushy Bluestem Andropogon glomeratus 4 pot, 1 gal, or 3 gal Mature Sizes 4' -5' Tall 3' -6' Tall Accent Color orange fall foliage winter cinnamon Remarks Prefers moist but Prefers moist to well- drained soils wet soils and full and full sun; mow sun; mow in early in winter spring; has out- standing fluffy heads Little Bluestem Schizachyrium scoporium 4" pot, 1 gal, or 3 gal 3' -6' Tall blue foliage Drought tolerant; prefers well - drained soils and full sun; mow in winter Mexican Feather Grass Stipa tenuissimo 4 pot, 1 gal, or 3 gal 2.5' -3' Tall Pine Muhly Muhlenbergia dubia 4 pot, 1 gal, or 3 gal 2.5' Tall summer gold head no Will not tolerate lots of irrigation; prefers dry soils and full to part sun; mow in fall Stiff green bunch grass creating a pincushion effect; well- drained soils and full sun; mow in late winter June 18, 2003 73 Landscape/ Irrigation NORTH T EXAS TOLL W A V AUTHORIT SYSTEM- WIDE DESIGN GUIDELINES Plant Palette Image Common Name Botanical Name Install Sizes LOW GRASSES AND VINES Buffalogross Buchloe doctyloides 4 pot, 1 gal, or 3 gal Mature Sizes 1' Tall Accent Color no Remarks Drought resistant; gray -green foli- age; prefers dry compacted clay or sand and full sun; mow in winter , b Weeping Love Grass Eragrostis curvula 4" pot, 1 gal, or 3 gal 2' Tall (foliage) Winter Rye Secale cereale seed n/a no no Shimmers in wind; Overseed turf prefers well- areas in fall for drained soil and winter green full to part sun; accents mow in late winter Boston Ivy Parthenocissus tricuspidota 1 gal or 3 gal n/a fall foliage Tolerant to stress environments; climbing vine; red fall foliage; prefers sun to part shade Coral Honeysuckle Virginia Creeper Lonicero sempervirens Parthenocissus quinquefolio 1 gal or 3 gal 1 gal or 3 gal n/a summer flowers n/a fall foliage Cascading vine which blooms spring through autumn Drought tolerant; prolific climbing vine which thrives in most soils and full sun to shade June 78, 2003 74 Landscape/ Irrigation