Trees

Magnolia

2021 Magnolia grandiflora
Hornbeam

2020 Carpinus species
Hornbeam

2020 Carpinus species
Hornbeam

2020 Carpinus species fruit
Vanderwolf Pyramid, Limber Pine

2019 Pinus flexilis
Vanderwolf Pyramid, Limber Pine

2019 Pinus flexilis
Japanese Zelkova

2018 Zelkova serrata 'Schmidtlow Wireless'
Japanese Zelkova

2018 Zelkova serrata 'Musashino'
Japanese Zelkova

2018 Zelkova serrata 'Ogon'
Fringetree

2017 Chionanthus cultivars
Fringetree

2017 Chionanthus Virginicus
Chioanthus

2017 virgincus
Chionanthus Fruit

2017 Chionanthus
Escarpment Oak

2016 Quercus fusiformis
Escarpment Live Oak

2016 Acorn
Hedge Maple

2015 Acer campestre
Desert-willow cultivars

2014 Chilopsis liners
Desert-willow cultivars

2014 Chilopsis Flower
Winterberry Euonymus

2013 Euonymus bungeanus
Chinkapin Oak

2012 Chinkapin Oak
'New Harmony' American Elm

2011 Ulmus americana
Indian Cherry

2010 Rhamuns carolinians
Arizona Cypress

2009 Cupressus arizonica
Bosnian Pine

2008 Pinus heldreichii
Oklahoma Redbud

2007 Cercis canadensis var. texensis
‘Prairifire’ Crabapple

2006 Malus ' Prairifire'
Cedar Elm

2005 Ulmus crassifolia
Cedar Elm

2005 Ulmus crassifolia
Shantung Maple

2004 Acer truncatum
Kentucky Coffee Tree

2003 Gymnocladus dioica
Bur Oak

2002 Quercus macrocarpa
Shumard Oak

2001 Quercus shumardii
Bald Cypress

2000 Taxodium distichum
Chinese Pistache

1999 Pistacia chinensis

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 2000

Bald Cypress

Taxodium distichum

This large Oklahoma native will lose its leaves in the fall after turning a russet or coppery-bronze and can easily grow to 70’ high with a 30’ spread. Tolerant of both wet and dry soils, Bald Cypress makes an outstanding specimen, street tree, or pond-side grove.

Sun exposure: Full
Soil: Well-drained to flood tolerant
Hardiness: USDA Zone 4

Shrub for 2000

‘Magic Carpet’ Spirea

Spiraea japonica 'Magic Carpet'

‘Magic Carpet’ Spirea is a new compact cultivar from England with dark pink flowers and reddish shoots bearing gold-tinged young foliage in spring. This shrub will remain compact, making it perfect for mixed borders, rock gardens, or small-scale landscapes.

Sun exposure: Full
Soil: Moist, well-drained
Hardiness: USDA Zone 4

Perennial for 2000

Homestead Purple Verbena

Verbena canadensis 'Homestead Purple'

Homestead Purple’s deep purple flowers and trailing habit make it perfect for hanging baskets, as a ground cover, or as the foreground of a mixed border. This North American native will bloom from spring to frost, slowing down only slightly during the hottest months.

Sun exposure: Full
Soil: Moist, well-drained
Hardiness: USDA Zone 4

Annual for 2000

Fan Flower

Scaevola aemula

Fan Flower is an evergreen tropical used as an annual in temperate climates. This low-growing plant carpets the ground with flowers all season long when grown in full sun. It prefers a moist, well-drained soil but is quite drought tolerant once established.

Sun exposure: Full
Soil: Moist, well-drained
Hardiness: Use as an annual