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1999-2019 Photos

  • Vanderwolf Pyramid, Limber Pine - 2019 Pinus flexilis
    Vanderwolf Pyramid, Limber Pine
    2019 Pinus flexilis
  • Vanderwolf Pyramid, Limber Pine - 2019 Pinus flexilis
    Vanderwolf Pyramid, Limber Pine
    2019 Pinus flexilis
  • Double Take™ series, Flowering Quince - 2019 Chaenomeles speciosa
    Double Take™ series, Flowering Quince
    2019 Chaenomeles speciosa
  • Double Take™ series, Flowering Quince - 2019 Chaenomeles speciosa
    Double Take™ series, Flowering Quince
    2019 Chaenomeles speciosa
  • Rattlesnake Master - 2019 Eryngium yuccifolium
    Rattlesnake Master
    2019 Eryngium yuccifolium
  • Rattlesnake Master - 2019 Eryngium yuccifolium
    Rattlesnake Master
    2019 Eryngium yuccifolium
  • Graffiti® series, Star Flower - 2019 Pentas lanceolata
    Graffiti® series, Star Flower
    2019 Pentas lanceolata
  • Graffiti® series, Star Flower - 2019 Pentas lanceolata
    Graffiti® series, Star Flower
    2019 Pentas lanceolata
  • Graffiti® series, Star Flower - 2019 Pentas lanceolata
    Graffiti® series, Star Flower
    2019 Pentas lanceolata
  • Japanese Zelkova - 2018 Zelkova serrata 'Schmidtlow Wireless'
    Japanese Zelkova
    2018 Zelkova serrata 'Schmidtlow Wireless'
  • Japanese Zelkova - 2018 Zelkova serrata 'Musashino'
    Japanese Zelkova
    2018 Zelkova serrata 'Musashino'
  • Japanese Zelkova - 2018 Zelkova serrata 'Ogon'
    Japanese Zelkova
    2018 Zelkova serrata 'Ogon'
  • Bush Clover 'Gibraltar' - 2018 Lespedeza thunbergii subsp. thunbergii
    Bush Clover 'Gibraltar'
    2018 Lespedeza thunbergii subsp. thunbergii
  • Bush Clover ‘Gibraltar’ - 2018 Lespedeza thunbergii subsp. thunbergii
    Bush Clover ‘Gibraltar’
    2018 Lespedeza thunbergii subsp. thunbergii
  • Indian pink - 2018 Spigelia marilandica
    Indian pink
    2018 Spigelia marilandica
  • Indian pink - 2018 Spigelia marilandica
    Indian pink
    2018 Spigelia marilandica
  • Supertunia® Vista Bubblegum® - 2018 Petunia 'Ustuni6001'
    Supertunia® Vista Bubblegum®
    2018 Petunia 'Ustuni6001'
  • Supertunia® Vista Bubblegum® - 2018 Petunia 'Ustuni6001'
    Supertunia® Vista Bubblegum®
    2018 Petunia 'Ustuni6001'
  • Chinese Date - 2017 Ziziphus jujuba
    Chinese Date
    2017 Ziziphus jujuba
  • Ziziphus Fruit - 2017 Chinese Date
    Ziziphus Fruit
    2017 Chinese Date
  • Fringetree - 2017 Chionanthus cultivars
    Fringetree
    2017 Chionanthus cultivars
  • Fringetree - 2017 Chionanthus Virginicus
    Fringetree
    2017 Chionanthus Virginicus
  • Chioanthus - 2017 virgincus
    Chioanthus
    2017 virgincus
  • Chionanthus Fruit - 2017 Chionanthus
    Chionanthus Fruit
    2017 Chionanthus
  • Dwarf Palmetto - 2017 Sabal minor
    Dwarf Palmetto
    2017 Sabal minor
  • Dwarf Palmetto - 2017 Sabal minor
    Dwarf Palmetto
    2017 Sabal minor
  • Milkweed - 2017 Asclepias
    Milkweed
    2017 Asclepias
  • Milkweed - 2017 Asclepias
    Milkweed
    2017 Asclepias
  • Milkweed - 2017 Asclepias
    Milkweed
    2017 Asclepias
  • Firecracker Flower - 2017 Crossandra infundibuliformis
    Firecracker Flower
    2017 Crossandra infundibuliformis
  • Firecracker Flower - 2017 Crossandra infindibuliformis
    Firecracker Flower
    2017 Crossandra infindibuliformis
  • Firecracker Flower Red - 2017 Crossandra infindibuliformis
    Firecracker Flower Red
    2017 Crossandra infindibuliformis
  • Deciduous Cultivars - 2016 Magnolia
    Deciduous Cultivars
    2016 Magnolia
  • Magnolia - 2016 Elizabeth
    Magnolia
    2016 Elizabeth
  • Magnolia - 2016 Elizabeth
    Magnolia
    2016 Elizabeth
  • Deciduous Cultivars - 2016 Magnolia
    Deciduous Cultivars
    2016 Magnolia
  • Escarpment Oak - 2016 Quercus fusiformis
    Escarpment Oak
    2016 Quercus fusiformis
  • Escarpment Live Oak - 2016 Acorn
    Escarpment Live Oak
    2016 Acorn
  • Yucca - 2016 Yucca filamentosa
    Yucca
    2016 Yucca filamentosa
  • Color Guard Yacca - 2016 Yucca filamentosa
    Color Guard Yacca
    2016 Yucca filamentosa
  • Sedge - 2016 Carex species
    Sedge
    2016 Carex species
  • Sedge - 2016 Carex species
    Sedge
    2016 Carex species
  • Vinca - 2016 Catharanthus
    Vinca
    2016 Catharanthus
  • Vinca - 2016 Catharanthus
    Vinca
    2016 Catharanthus
  • Vinca - 2016 Catharanthus
    Vinca
    2016 Catharanthus
  • Black Gum - 2015 Nyssa sylvatica
    Black Gum
    2015 Nyssa sylvatica
  • Hedge Maple - 2015 Acer campestre
    Hedge Maple
    2015 Acer campestre
  • Barberry - 2015 Berberis thunbergii
    Barberry
    2015 Berberis thunbergii
  • Volcano Phlox - 2015 Phlox paniculata
    Volcano Phlox
    2015 Phlox paniculata
  • Spider Flower - 2015 Cleome hybrids
    Spider Flower
    2015 Cleome hybrids
  • Seven-son-flower - 2014 Heptacodium miconioides
    Seven-son-flower
    2014 Heptacodium miconioides
  • Seven-son-flower - 2014 Heptacodium miconioides
    Seven-son-flower
    2014 Heptacodium miconioides
  • Desert-willow cultivars - 2014 Chilopsis liners
    Desert-willow cultivars
    2014 Chilopsis liners
  • Desert-willow cultivars - 2014 Chilopsis Flower
    Desert-willow cultivars
    2014 Chilopsis Flower
  • ‘Christom’  Blue Muffin® - 2014 Viburnum dentatum
    ‘Christom’ Blue Muffin®
    2014 Viburnum dentatum
  • ‘Christom’ Blue Muffin® Fruit - 2014 Viburnum dentatum
    ‘Christom’ Blue Muffin® Fruit
    2014 Viburnum dentatum
  • Switch Grass - 2014 Panicum virgatum cultivars
    Switch Grass
    2014 Panicum virgatum cultivars
  • 'Big Twister' Corkscrew Rush - 2014 Juncus effusus 'Big Twister'
    'Big Twister' Corkscrew Rush
    2014 Juncus effusus 'Big Twister'
  • Fruit Collection - 2013 Fruit Collection
    Fruit Collection
    2013 Fruit Collection
  • Fruit Collection - 2013 Fruit Collection
    Fruit Collection
    2013 Fruit Collection
  • Winterberry Euonymus - 2013 Euonymus bungeanus
    Winterberry Euonymus
    2013 Euonymus bungeanus
  • Winterberry Fruit - 2013 Winterberry Fruit
    Winterberry Fruit
    2013 Winterberry Fruit
  • Chaste Tree - 2013 Vitex
    Chaste Tree
    2013 Vitex
  • Chaste Tree Flower - 2013 Chaste Tree Flower
    Chaste Tree Flower
    2013 Chaste Tree Flower
  • ‘Walker’s Low’  Catmint  - 2013 Nepeta x faassenii
    ‘Walker’s Low’ Catmint
    2013 Nepeta x faassenii
  • Dakota Gold - 2013 Helenium 'Dakota Gold'
    Dakota Gold
    2013 Helenium 'Dakota Gold'
  • Dakota Gold - 2013 Dakota Gold
    Dakota Gold
    2013 Dakota Gold
  • Tiger Eye - 2012 Rhus typhina
    Tiger Eye
    2012 Rhus typhina
  • Chinkapin Oak - 2012 Chinkapin Oak
    Chinkapin Oak
    2012 Chinkapin Oak
  • Juniper 'Taylor' - 2012 Juniperus virginiana 'Tylor'
    Juniper 'Taylor'
    2012 Juniperus virginiana 'Tylor'
  • Icee Blue - 2012 J. horizontalis 'Monber'
    Icee Blue
    2012 J. horizontalis 'Monber'
  • 'Saybrook Gold' - 2012 J. chinensis 'Saybrook Gold'
    'Saybrook Gold'
    2012 J. chinensis 'Saybrook Gold'
  • Arkansas Bluestar - 2012 Amsonia hubrichtii
    Arkansas Bluestar
    2012 Amsonia hubrichtii
  • Arkansas Bluestar - 2012 Amsonia hubrichtii
    Arkansas Bluestar
    2012 Amsonia hubrichtii
  • Arkansas Bluestar - 2012 Amsonia hubrichtii
    Arkansas Bluestar
    2012 Amsonia hubrichtii
  • Magilla™ Perilla - 2012 Perilla frutescens
    Magilla™ Perilla
    2012 Perilla frutescens
  • Silver Linden - 2011 Titia tomentosa
    Silver Linden
    2011 Titia tomentosa
  • Silver Linden - 2011 Tilia tomentosa
    Silver Linden
    2011 Tilia tomentosa
  • 'New Harmony' American Elm - 2011 Ulmus americana
    'New Harmony' American Elm
    2011 Ulmus americana
  • Little Richard - 2011 Abelia x grandiflora
    Little Richard
    2011 Abelia x grandiflora
  • Kaleidoscope - 2011 Abelia x grandiflora
    Kaleidoscope
    2011 Abelia x grandiflora
  • Rose Creek' Abeia - 2011 Abelia
    Rose Creek' Abeia
    2011 Abelia
  • Giant Coneflower - 2011 Rudbeckia maxima
    Giant Coneflower
    2011 Rudbeckia maxima
  • Giant Coneflower - 2011 Rudbeckia maxima
    Giant Coneflower
    2011 Rudbeckia maxima
  • Pink Crystal Ruby Grass - 2011 Melinus nerviglumis 'Savannah'
    Pink Crystal Ruby Grass
    2011 Melinus nerviglumis 'Savannah'
  • Pink Crystals Ruby Grass - 2011 Melinus nerviglumis
    Pink Crystals Ruby Grass
    2011 Melinus nerviglumis
  • 'Caddo' Sugar Maple - 2010 Acer saccharum 'Caddo'
    'Caddo' Sugar Maple
    2010 Acer saccharum 'Caddo'
  • Indian Cherry - 2010 Rhamuns carolinians
    Indian Cherry
    2010 Rhamuns carolinians
  • Koreanspice Viburnum - 2010 Viburnum carlesii
    Koreanspice Viburnum
    2010 Viburnum carlesii
  • Toad Lily - 2010 Tricyrtis hirta
    Toad Lily
    2010 Tricyrtis hirta
  • Silver Falls Dichondra - 2010 Dichondra argentea
    Silver Falls Dichondra
    2010 Dichondra argentea
  • Persian Parrotia - 2009 Parrotia persica
    Persian Parrotia
    2009 Parrotia persica
  • Parrotia Bark - 2009 Persian Parrotia Bark
    Parrotia Bark
    2009 Persian Parrotia Bark
  • Arizona Cypress - 2009 Cupressus arizonica
    Arizona Cypress
    2009 Cupressus arizonica
  • Cyress Bark - 2009 Arizona Cyress Bark
    Cyress Bark
    2009 Arizona Cyress Bark
  • Chokebeery - 2009 Aronia
    Chokebeery
    2009 Aronia
  • Chokebeery Fruit - 2009Chokebeery Fruit
    Chokebeery Fruit
    2009Chokebeery Fruit
  • Mexican Feather Grass - 2009 Nassella tenuissima
    Mexican Feather Grass
    2009 Nassella tenuissima
  • Diamond Frost Euphorbia - 2009 Euphorbia 'Inneuphdia'
    Diamond Frost Euphorbia
    2009 Euphorbia 'Inneuphdia'
  • Bosnian Pine - 2008 Pinus heldreichii
    Bosnian Pine
    2008 Pinus heldreichii
  • American Beautyberry - 2008 Callicarpa americana
    American Beautyberry
    2008 Callicarpa americana
  • Hellebore - 2008 Helleborus
    Hellebore
    2008 Helleborus
  • Spilanthes - 2008 Acmella oleracea 'Peek-A-Boo'
    Spilanthes
    2008 Acmella oleracea 'Peek-A-Boo'
  • Oklahoma Redbud - 2007 Cercis canadensis var. texensis
    Oklahoma Redbud
    2007 Cercis canadensis var. texensis
  • Southern Waxmyrtle - 2007 Myrica cerifera
    Southern Waxmyrtle
    2007 Myrica cerifera
  • Evening Primrose - 2007 Oenothera macrocarpa
    Evening Primrose
    2007 Oenothera macrocarpa
  • Blanket Flower - 2007 Gaillardia
    Blanket Flower
    2007 Gaillardia
  • ‘Prairifire’ Crabapple - 2006 Malus ' Prairifire'
    ‘Prairifire’ Crabapple
    2006 Malus ' Prairifire'
  • Diabolo® Ninebark - 2006 Physocarpus opulifolius 'Monlo'
    Diabolo® Ninebark
    2006 Physocarpus opulifolius 'Monlo'
  • 'Golden Jubilee' Anise Hyssop - 2006 Agastache foeniculum 'Golden Jubilee'
    'Golden Jubilee' Anise Hyssop
    2006 Agastache foeniculum 'Golden Jubilee'
  • Wishbone Flower - 2006 Torenia fournirez
    Wishbone Flower
    2006 Torenia fournirez
  • Cedar Elm - 2005 Ulmus crassifolia
    Cedar Elm
    2005 Ulmus crassifolia
  • Cedar Elm - 2005 Ulmus crassifolia
    Cedar Elm
    2005 Ulmus crassifolia
  • Crossvine - 2005 Bignonia capreolata
    Crossvine
    2005 Bignonia capreolata
  • Perennial Plumbago - 2005 Ceratostigma plumbaginoides
    Perennial Plumbago
    2005 Ceratostigma plumbaginoides
  • Summer Snapdragon - 2005 Angelonia angustifolia
    Summer Snapdragon
    2005 Angelonia angustifolia
  • Shantung Maple - 2004 Acer truncatum
    Shantung Maple
    2004 Acer truncatum
  • Winter Jasmine - 2004 Jasminum nudiflorum
    Winter Jasmine
    2004 Jasminum nudiflorum
  • Autumn Sage - 2004 Salvia greggii 'Pink Perfernce'
    Autumn Sage
    2004 Salvia greggii 'Pink Perfernce'
  • Firebush - 2004 Hamelia patens
    Firebush
    2004 Hamelia patens
  • Kentucky Coffee Tree - 2003 Gymnocladus dioica
    Kentucky Coffee Tree
    2003 Gymnocladus dioica
  • Pink Velour® Crape Myrtle - 2003 Lagerstroemia indica 'Whit III'
    Pink Velour® Crape Myrtle
    2003 Lagerstroemia indica 'Whit III'
  • Japanese Painted Fern - 2003 Athyrium nipponicum
    Japanese Painted Fern
    2003 Athyrium nipponicum
  • Yellow Bells - 2003 Tecoma stans
    Yellow Bells
    2003 Tecoma stans
  • Bur Oak - 2002 Quercus macrocarpa
    Bur Oak
    2002 Quercus macrocarpa
  • Japanese Kerria - 2002 Kerria japonica
    Japanese Kerria
    2002 Kerria japonica
  • 'Magnus' Purple Coneflower - 2002 Echinacea purpurea 'Magnus'
    'Magnus' Purple Coneflower
    2002 Echinacea purpurea 'Magnus'
  • 'Margarita' Sweet Potato - 2002 Echinacea purpurea 'Margarita'
    'Margarita' Sweet Potato
    2002 Echinacea purpurea 'Margarita'
  • Shumard Oak - 2001 Quercus shumardii
    Shumard Oak
    2001 Quercus shumardii
  • Deciduous Holly - 2001 Ilex decidua
    Deciduous Holly
    2001 Ilex decidua
  • 'Siskiyou Pink' Gaura - 2001 Gaura lindheimeri 'Siskiyou Pink'
    'Siskiyou Pink' Gaura
    2001 Gaura lindheimeri 'Siskiyou Pink'
  • Mexican Zinnia - 2001 Zinnia angustifolia
    Mexican Zinnia
    2001 Zinnia angustifolia
  • Bald Cypress - 2000 Taxodium distichum
    Bald Cypress
    2000 Taxodium distichum
  • 'Magic Carpet' Spirea - 2000 Spiraea japonica 'Magic Carpet
    'Magic Carpet' Spirea
    2000 Spiraea japonica 'Magic Carpet
  • 'Homestead Purple' Verbena - 2000 Verbena canadensis 'Homestead Purple'
    'Homestead Purple' Verbena
    2000 Verbena canadensis 'Homestead Purple'
  • Fan Flower - 2000 Scaevola aemula
    Fan Flower
    2000 Scaevola aemula
  • Chinese Pistache - 1999 Pistacia chinensis
    Chinese Pistache
    1999 Pistacia chinensis
  • Oakleaf Hydrangea - 1999 Hydrangea quercifolia
    Oakleaf Hydrangea
    1999 Hydrangea quercifolia
  • 'Powis Castle' - 1999 Artemisia 'Powis Castle'
    'Powis Castle'
    1999 Artemisia 'Powis Castle'
  • Purple Fountain Grass - 1999 Pennisetum setaceum
    Purple Fountain Grass
    1999 Pennisetum setaceum

Oklaoma Proven! logo.jpg

 

Oklahoma Proven is a plant promotion program coordinated by faculty in the Department of Horticulture and Landscape Architecture at Oklahoma State University. The goal of the program is to recommend plants well-adapted for use across Oklahoma.

 


Collector's Choice for 2016

Deciduous Cultivars

Magnolia

Deciduous forms of magnolia are spectacular additions to any spring landscape. Among the most popular of deciduous forms are star magnolia (M. stellata) and saucer magnolia (M. x soulangiana), but several others are available along with their many hybrids, which provide a wide variety of flower colors from red to white, yellow, pink, or purple. The most common color available is pink, but others should be tried such as ‘Elizabeth’, an older selection with creamy yellow flowers, or ‘Butterflies’, a newer selection with deep yellow flowers. Flowers of deciduous magnolias appear just before or while the leaves are emerging in spring. Early flowering varieties can be damaged by late frosts; avoid placing plants in a southern exposure where flowers will open early. Deciduous magnolias can range in size from small to medium shrubs to large trees.
  • Exposure: Full sun to part shade
  • Soil: Prefers moist, well-drained, acid soil, but is adaptable
  • Hardiness: USDA Zone 4-9


 

 

Tree for 2016

Escarpment Live Oak

Quercus fusiformis

Escarpment live oak is a smaller version of the coastal live oak (Q. virginiana) growing slowly to 20 to 40 feet high and about as wide with picturesquely gnarled branches and evergreen leaves. Escarpment live oak is native to southern Oklahoma through central and western Texas to northern Mexico, which means it is also more drought and cold tolerant than coastal live oak. Because of its slower growth it is a perfect long-lived shade tree for smaller, urban landscapes. Branches provide excellent nesting sites for birds and small mammals. Acorns are elongated and eaten by wildlife. It is also the larval host of the Hairstreak and Horace’s Duskywing butterflies.

  • Exposure: Full sun or light shade
  • Soil: Alkaline to slightly acid, well-drained soils
  • Hardiness: USDA Zone 6-10

 

 

 

Shrub for 2016

Color Guard Variegated Yucca

Yucca filamentosa 'Color Guard'

Yucca is virtually a stemless evergreen shrub native to the southeast. ‘Color Guard’ is a gold-centered, variegated form with upright sword-shaped leaves that provide striking architectural features to the garden. Flowering stalks arise in late spring from the center of the plant bearing long, terminal panicles of bell-shaped, nodding, fragrant, creamy white flowers. ‘Color Guard’ yucca is free of pests and is tolerant of dry areas. It is excellent in borders, xeriscape plantings, containers, and as an accent plant.

  • Exposure: Sun to part shade
  • Soil: Dry to medium, well-drained soil
  • Hardiness: USDA Zone 3-8.

 

 

 

Perennial for 2016

Sedges

Carex species

Sedges belong to the genus Carex, which is a genus of many species, most from wet areas such as bogs. Sedges have triangular, grass-like stems and panicles of short flower spikes. Foliage can be evergreen or deciduous and colors range from green, brown/rust, golden, blue, to variegated. Sedges are grown in groups or masses, as a lawn substitute, in naturalized areas, perennial borders, and habitat restoration. They are grown particularly in shady areas where the variegated varieties really shine. Some require damp or wet conditions while others are relatively drought tolerant.

  • Exposure: Full sun to part or full shade
  • Soil: Dry to wet soils
  • Hardiness: USDA Zone 3-10

 

 

 

Annual for 2016

Annual Vinca (improved, resistant varieties)

Catharanthus

Annual vinca, also goes by Madagascar periwinkle and other common names, tolerates the heat and humidity of the southeast. Full sun and warm soil temperature is required for this species to thrive and it is tolerant of low fertility soils and is drought tolerant. Flower colors come in shades of white, pink, red, and purple. Plants grow 6 to 12 inches tall and 8 to 24 inches wide depending on cultivar. Improved cultivars provide an abundance of flowers on stocky plants and disease resistance, which is very important with this species. Improved cultivars include plants in the Cora series, Mediterranean series, Titan series, and many others.

  • Exposure: Full sun to part shade
  • Soil: Well-drained, slightly dry soil
  • Hardiness: Use as an annual