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1999-2018 Photos

  • 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 2017

Jujube or Chinese Date

Ziziphus jujuba

Jujube, also known as Chinese date is an excellent small to medium sized tree with shiny green foliage in summer and yellow leaves in fall. The naturally drooping tree is graceful, ornamental and often thorny with branches growing in a zig-zag pattern. Jujube can grow to about 15 to 30 feet high. It makes a great landscape tree with the added benefit of edible fruits. Commonly grown cultivars include ‘Li’ and ‘Lang’. Fruit are round to elongate and mature from green to red, when they have a sweet, crisp flesh somewhat similar to an apple. After maturing to red/reddish brown, the fruits wrinkle and take on the appearance of a date.

  • Exposure: Full sun to part shade
  • Soil: Prefers moist, well-drained, acid soil, but is adaptable
  • Hardiness: USDA Zone 4-9




2017 Ziziphus jujuba

 

 

Tree for 2017

Fringetree

Chionanthus cultivars

Chionanthus virginicus is a deciduous, native shrub or small tree with a spreading, rounded habit that typically grows 12-20 feet tall and most often occurs in rich, moist woods and hillsides and moist stream banks. The common name fringetree refers to the slightly fragrant, spring flowers which feature airy, terminal, drooping clusters of fringe-like, creamy white petals. Fringetrees are dioecious (separate male and female plants), but also may have perfect flowers on each plant. Male flowers are showier than female flowers. Plants with perfect or female flowers may give way to clusters of olive-like fruits which ripen to a dark, bluish black in late summer and are a food source for birds and wildlife. Cultivars from the Chinese cousin is also available.

  • Exposure: Full sun or light shade
  • Soil: Tolerates wide variety of soils
  • Hardiness: USDA Zone 5-8
2017 Chionanthus cultivars

 

 

 

Shrub for 2017

Dwarf Palmetto

Sabal minor

Dwarf palmetto favors the wet alluvial soil in swamps and river bottoms in Texas, Oklahoma, Arkansas and North Carolina and is the only member of the palm family native to Oklahoma. This very slow growing, ground-hugging rugged fan palm produces pale green or bluish fan-like, evergreen leaves atop spineless stems arising from a crown of underground roots reaching 4 to 6 feet high or more. Flowers are yellowish-white in late spring followed by edible black, BB-sized fruits that taste like dates.

Dwarf palmetto provides interest and variety to a damp, shaded place. Although this plant grows native in areas of high to moderate moisture, once established it is fairly drought tolerant. It is the most cold-tolerant Sabal. In the landscape it works well as a specimen plant, in mass plantings, or in containers.

  • Exposure: Sun, part shade (best in part shade)
  • Soil: Organically rich, moderately fertile, moist
  • Hardiness: USDA Zone 7-10.
2017 Sabal minor

 

 

 

Perennial for 2017

Milkweed

Asclepias species

Asclepias species are the milkweeds. Native to America they are well adapted to many soil types. Best known as the host plant for monarch butterflies, the milkweeds have gained a lot of attention lately and efforts across the country to reestablish lost habitat to help save the declining monarch population is taking the front stage for gardeners, butterfly enthusiasts, and conservationists. Butterfly milkweed, Asclepias tuberosa, is the most popular of Asclepias species with bright orange to yellow-orange flowers on upright stems growing 1 to 3 feet tall. In fact, butterfly milkweed has been named the Perennial of the Year in 2017 by the Perennial Plant Association. Milkweeds in general grow in average, dry to medium, well-drained soils in full sun and are very drought tolerant and have no serious pest problems. Grow in native plant gardens, wild gardens, meadows, naturalized areas, perennial borders, and cottage style gardens.

  • Exposure: Sun, part shade
  • Soil: Tolerates about any soil
  • Hardiness: USDA Zone 4-10
2017 Asclepias

 

 

 

Annual for 2017

Firecracker Flower

Crossandra infundibuliformis

Firecracker flower, is native to India and Sri Lanka where it is a tropical evergreen subshrub that grows 1-3 feet tall. Flowers are apricot to salmon pink in color and form in terminal racemes. Yellow and red flowered forms are also available. Plants bloom throughout the summer and attract pollinators. Leaves of firecracker flower are shiny dark green. ‘Orange Marmalade’ has long lasting blooms on a plant that thrives with heat and humidity. Large clusters of frilly, bright orange flowers shine against the glossy green foliage.

Firecracker flower prefers light, organically rich, medium moisture, well-drained soils in full sun or part shade, but will tolerate bright full shade. Plants thrive in warm, humid weather and have no serious insect or disease problems. Firecracker flower is beautiful in beds, borders, containers or as a houseplant.

  • Exposure: Full sun to part shade
  • Soil: Moist, well-drained soil
  • Hardiness: Use as an annual