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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 2004

Shantung Maple

Acer truncatum

Shantung Maple is a drought tolerant small to medium-sized tree great for under power lines or in residential landscapes where there isn’t room for a large tree. It grows quickly but typically only to 30' high. The leaves are star-shaped and typically emerge with an attractive purple tinge. This Asian native can have excellent fall color ranging from yellow to orange or red.

  • Exposure: Full
  • Soil: Tolerates a wide range of conditions
  • Hardiness: USDA Zone 4

 

 

 

Shrub for 2004

Winter Jasmine

Jasminum nudiflorum

Winter Jasmine is often mistaken for forsythia but it flowers earlier and has a longer lasting floral display. It flowers As early as December before its glossy green leaves are formed. It can be pruned and used as a hedge but left untrimmed it will arch gracefully forming a four foot high mound spreading to seven feet. Winter Jasmine requires very little care and is easily rejuvenated by cutting it to the ground every three to five years.

  • Exposure: Full sun to part shade
  • Soil: Tolerates a wide range of conditions
  • Hardiness: USDA Zone 6

 

 

 

Perennial for 2004

Autumn Sage

Salvia greggii 'Pink Prefernce'

‘Pink Preference’ is a cultivar of Autumn Sage that was selected for its bright pink flowers. Like the species, it is a heat and drought tolerant perennial that starts blooming in the spring but blooms most in the autumn as other flowers in the garden start to fade. It forms a two to three foot mound and attracts hummingbirds and butterflies to the garden. Pruning to six inches high each spring will help keep Autumn Sage dense and full.

  • Exposure: Full
  • Soil: Well-drained
  • Hardiness: USDA Zone 6

 

 

 

Annual for 2004

Firebush

Hamelia patens

This Central and South American native is a small tree when grown in the deep South but is best used as a heat tolerant annual in Oklahoma. The lush green foliage can produce a dense mound over three feet high in full sun and color is added by the interesting orange-red flowers and the reddish tinge on the leaf petioles. Firebush thrives in the summer heat and attracts hummingbirds and butterflies to the garden.

  • Exposure: Full
  • Soil: Well-drained
  • Hardiness: Use as an annual