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Perennial

  • Rattlesnake Master - 2019 Eryngium yuccifolium
    Rattlesnake Master
    2019 Eryngium yuccifolium
  • Rattlesnake Master - 2019 Eryngium yuccifolium
    Rattlesnake Master
    2019 Eryngium yuccifolium
  • Indian pink - 2018 Spigelia marilandica
    Indian pink
    2018 Spigelia marilandica
  • Indian pink - 2018 Spigelia marilandica
    Indian pink
    2018 Spigelia marilandica
  • Milkweed - 2017 Asclepias
    Milkweed
    2017 Asclepias
  • Milkweed - 2017 Asclepias
    Milkweed
    2017 Asclepias
  • Milkweed - 2017 Asclepias
    Milkweed
    2017 Asclepias
  • Sedge - 2016 Carex species
    Sedge
    2016 Carex species
  • Sedge - 2016 Carex species
    Sedge
    2016 Carex species
  • Volcano Phlox - 2015 Phlox paniculata
    Volcano Phlox
    2015 Phlox paniculata
  • Switch Grass - 2014 Panicum virgatum cultivars
    Switch Grass
    2014 Panicum virgatum cultivars
  • ‘Walker’s Low’  Catmint  - 2013 Nepeta x faassenii
    ‘Walker’s Low’ Catmint
    2013 Nepeta x faassenii
  • 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
  • Giant Coneflower - 2011 Rudbeckia maxima
    Giant Coneflower
    2011 Rudbeckia maxima
  • Giant Coneflower - 2011 Rudbeckia maxima
    Giant Coneflower
    2011 Rudbeckia maxima
  • Toad Lily - 2010 Tricyrtis hirta
    Toad Lily
    2010 Tricyrtis hirta
  • Mexican Feather Grass - 2009 Nassella tenuissima
    Mexican Feather Grass
    2009 Nassella tenuissima
  • Hellebore - 2008 Helleborus
    Hellebore
    2008 Helleborus
  • Evening Primrose - 2007 Oenothera macrocarpa
    Evening Primrose
    2007 Oenothera macrocarpa
  • 'Golden Jubilee' Anise Hyssop - 2006 Agastache foeniculum 'Golden Jubilee'
    'Golden Jubilee' Anise Hyssop
    2006 Agastache foeniculum 'Golden Jubilee'
  • Perennial Plumbago - 2005 Ceratostigma plumbaginoides
    Perennial Plumbago
    2005 Ceratostigma plumbaginoides
  • Autumn Sage - 2004 Salvia greggii 'Pink Perfernce'
    Autumn Sage
    2004 Salvia greggii 'Pink Perfernce'
  • Japanese Painted Fern - 2003 Athyrium nipponicum
    Japanese Painted Fern
    2003 Athyrium nipponicum
  • 'Magnus' Purple Coneflower - 2002 Echinacea purpurea 'Magnus'
    'Magnus' Purple Coneflower
    2002 Echinacea purpurea 'Magnus'
  • 'Siskiyou Pink' Gaura - 2001 Gaura lindheimeri 'Siskiyou Pink'
    'Siskiyou Pink' Gaura
    2001 Gaura lindheimeri 'Siskiyou Pink'
  • 'Homestead Purple' Verbena - 2000 Verbena canadensis 'Homestead Purple'
    'Homestead Purple' Verbena
    2000 Verbena canadensis 'Homestead Purple'
  • 'Powis Castle' - 1999 Artemisia 'Powis Castle'
    'Powis Castle'
    1999 Artemisia 'Powis Castle'

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.

 

 

Tree for 2007

Oklahoma Redbud

Cercis canadensis var. texensis

A cultivar of Oklahoma’s state tree, ‘Oklahoma’ was discovered in the Arbuckle Mountains and was selected for the incredible magenta flowers that cover the tree in early spring. When the flowers fade, heart-shaped leaves emerge with a beautiful glossy sheen. ‘Oklahoma’ Redbud can withstand full sun and their small size (15' – 25' high) makes them perfect for use under utility lines. They tolerate a wide range of conditions but do best on well-drained soils. ‘Oklahoma’ is one of the most beautiful native trees and is perfect for small yards needing a splash of color or grouped together where space allows.

  • Exposure: Full sun to part shade
  • Soil: Well-drained
  • Hardiness: USDA Zone 6

 

 

 

Shrub for 2007

Southern Waxmyrtle

Myrica cerifera

Southern Waxmyrtle is a broad-leaved evergreen native to the southeast corner of Oklahoma and along much of the eastern coastal plain. It has been described as the southern cousin of Bayberry and has a similar scent when new leaves emerge in spring. Southern Waxmyrtle can be grown as a large shrub, making an excellent naturalistic screen, or can be pruned to tree form exposing its light-gray bark. It fixes atmospheric nitrogen making it suitable on poor soils and it withstands bog-like conditions. Narrow leaf, compact, and dwarf cultivars are available extending the possible uses for this native shrub.

  • Exposure: Full sun to part shade
  • Soil: Tolerates a wide range of soils
  • Hardiness: USDA Zone 7

 

 

 

Perennial for 2007

Evening Primrose

Oenothera macrocarpa 'Comanche Campfire'

This species of Evening Primrose is native to western Oklahoma and ‘Comanche Campfire’ was selected for its ability to produce beautiful yellow flowers above red petioles and silver foliage. It is touted as a xeriscape perennial since it thrives in well-drained soil and, once established, requires little moisture. As a low-growing, clumping perennial, ‘Comanche Campfire’ reaches a height of 15 to 18 inches and spreads to two feet. Use it in a rock garden or along the edge of a perennial bed.

  • Exposure: Full sun
  • Soil: Well-drained
  • Hardiness: USDA Zone 4

 

 

 

Annual for 2007

Blanket Flower

Gaillardia

Gaillardia is a genus of native wildflowers that have captivated gardeners with bright red and yellow flowers and an ability to bloom in hot, dry conditions. The native species, Gaillardia pulchella, is Oklahoma’s state wildflower and makes an excellent garden plant. Hybrids (Gaillardia x grandiflora) and new cultivars have been introduced that expand the color range and form of Gaillardia including: ‘Goblin’ (dwarf form), ‘Fanfare’ (interesting trumpet-shaped flowers around the central disc), ‘Arizona Sun’ (compact plants with a long period of bloom), and ‘Summer’s Kiss’ (yellow-apricot flowers), among others. Gaillardia is often a perennial, but it also reseeds readily creating drifts of color in the garden or meadow. Allow the seed heads to dry on the plant for maximum reseeding and floral display the following summer.

  • Exposure: Full sun
  • Soil: Well-drained
  • Hardiness: USDA Zone 4