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Annual

  • 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
  • Supertunia® Vista Bubblegum® - 2018 Petunia 'Ustuni6001'
    Supertunia® Vista Bubblegum®
    2018 Petunia 'Ustuni6001'
  • Supertunia® Vista Bubblegum® - 2018 Petunia 'Ustuni6001'
    Supertunia® Vista Bubblegum®
    2018 Petunia 'Ustuni6001'
  • Firecracker Flower - 2017 Crossandra infundibuliformis
    Firecracker Flower
    2017 Crossandra infundibuliformis
  • Firecracker Flower - 2017 Crossandra infindibuliformis
    Firecracker Flower
    2017 Crossandra infindibuliformis
  • Vinca - 2016 Catharanthus
    Vinca
    2016 Catharanthus
  • Vinca - 2016 Catharanthus
    Vinca
    2016 Catharanthus
  • Vinca - 2016 Catharanthus
    Vinca
    2016 Catharanthus
  • Spider Flower - 2015 Cleome hybrids
    Spider Flower
    2015 Cleome hybrids
  • 'Big Twister' Corkscrew Rush - 2014 Juncus effusus 'Big Twister'
    'Big Twister' Corkscrew Rush
    2014 Juncus effusus 'Big Twister'
  • Dakota Gold - 2013 Helenium 'Dakota Gold'
    Dakota Gold
    2013 Helenium 'Dakota Gold'
  • Dakota Gold - 2013 Dakota Gold
    Dakota Gold
    2013 Dakota Gold
  • Magilla™ Perilla - 2012 Perilla frutescens
    Magilla™ Perilla
    2012 Perilla frutescens
  • 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
  • Silver Falls Dichondra - 2010 Dichondra argentea
    Silver Falls Dichondra
    2010 Dichondra argentea
  • Diamond Frost Euphorbia - 2009 Euphorbia 'Inneuphdia'
    Diamond Frost Euphorbia
    2009 Euphorbia 'Inneuphdia'
  • Spilanthes - 2008 Acmella oleracea 'Peek-A-Boo'
    Spilanthes
    2008 Acmella oleracea 'Peek-A-Boo'
  • Blanket Flower - 2007 Gaillardia
    Blanket Flower
    2007 Gaillardia
  • Wishbone Flower - 2006 Torenia fournirez
    Wishbone Flower
    2006 Torenia fournirez
  • Summer Snapdragon - 2005 Angelonia angustifolia
    Summer Snapdragon
    2005 Angelonia angustifolia
  • Firebush - 2004 Hamelia patens
    Firebush
    2004 Hamelia patens
  • Yellow Bells - 2003 Tecoma stans
    Yellow Bells
    2003 Tecoma stans
  • 'Margarita' Sweet Potato - 2002 Echinacea purpurea 'Margarita'
    'Margarita' Sweet Potato
    2002 Echinacea purpurea 'Margarita'
  • Mexican Zinnia - 2001 Zinnia angustifolia
    Mexican Zinnia
    2001 Zinnia angustifolia
  • Fan Flower - 2000 Scaevola aemula
    Fan Flower
    2000 Scaevola aemula
  • 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.

 


Tree for 2008

Bosnian Pine

Pinus heldreichii

Bosnian Pine is a slow-growing evergreen with a dense pyramidal form when young. It has the potential to grow to 70' tall in its native environment but is more likely to reach only 25 to 30' in the landscape. In the Pirin Mountains of Bulgaria there is a 70' tall Bosnian Pine estimated to be over 1300 years old! Young cones are purple and turn brown as they mature and the seed they produce is edible. Bosnian Pine prefers full sun and once established is quite tolerant of high pH soils and drought. It is also disease resistant and can be used in the landscape where an evergreen or pine is desired and space is limited.

  • Exposure: Full sun
  • Soil: Tolerant of dry and high pH soils
  • Hardiness: USDA Zone 6

 

 

Shrub for 2008

American Beautyberry

Callicarpa americana

American Beautyberry is a native deciduous shrub that produces inconspicuous lavender flowers in mid summer but as fall approaches the plant becomes laden with brightly colored clusters of purple fruit producing a striking display. American Beautyberry prefers light shade or protection from the afternoon sun in Oklahoma. It grows from 5 to 10' high and just as broad but overgrown plants can be rejuvenated by cutting them to the ground in winter without sacrificing fruit since the flowers are produced on new growth. This native shrub can be massed as an informal hedge, incorporated into a mixed border, or used as an understory plant in a naturalistic garden setting. White fruited cultivars are also available.

  • Exposure: Light shade
  • Soil: Moist, well-drained
  • Hardiness: USDA Zone 6

 

 

 

Perennial for 2008

Hellebore

Helleborus

Hellebores, also known as Lenten Rose, belong to a genus of mostly evergreen herbaceous plants that are prized for their ability to flower in late winter. The flower stalks rise out of the leaf litter or through the snow to display nodding flowers that range in color from green to white, yellow, or even purple with some cultivars producing spotted flowers. Recently hybrids have been selected for outward-facing flowers and brighter colors increasing their garden value. Hellebores are tough plants requiring little special care other than shade and pruning of old foliage. They are excellent for the woodland garden as understory plants where they will be protected by shade.

  • Exposure: Shade
  • Soil: Moist, well-drained
  • Hardiness: USDA Zone 6

 

 

 

Annual for 2008

Spilanthes

Acmella oleracea 'Peek-A-Boo'

‘Peek-A-Boo’ Spilanthes was selected for its yellow flowers, each with a red eye poking up out of the foliage. The green foliage has a purple tinge in full sun turning more purple as fall approaches and the foliage can be used in salads or cooked as a green. Spilanthes is also known as the Toothache Plant because it has been used to numb pain. In the garden it is a great conversation piece when combined with other plants in a mixed container or it can be used as a flowering groundcover growing 12 to 15 inches tall and spreading 24 to 30 inches.

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