Ornamental Trees for Bowling Green Landscapes

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Ornamental Trees for Bowling Green Landscapes

• Dr. Martin Stone
• Western Kentucky University

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Ornamental Trees

• ALL trees are ornamental

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All trees are ornamental but

• Only a few are appropriate for urban landscapes
• Focus on Small Trees
• gt 25 feet tall
• Lets look at an ideal tree
• Lets ask a lot of it, too

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Ideal Small Tree

• More than one season of interest
• Leaves, Flowers, Fruits
• Contribute to the beauty of landscape
• But not overwhelm it
• Contribute to functionality of landscape
• Energy conservation
• Resistance to insects and diseases
• Tolerance of abused, compacted, polluted urban
  soils

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Ideal Small Tree

• May Also Include
• Wildlife habitat
• Evergreens provide winter cover
• Winter food supply

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Ideal Small Tree

• Should NOT Include
• Messy habits
• Dropping seeds, acorns, fruits, stinking flowers
• Surface roots

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Small, Ornamental Trees

• Street Trees/UtiliTrees
• Fit beneath power lines
• Designed to grow between sidewalk and street
• Pedestrian-friendly branches
• Low maintenance

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On to the TREES
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Japanese Maple(Acer palmatum)

• Many cultivars
• Prefers afternoon protection
• Evenly moist conditions
• DO NOT plant deeply
• Sunlight gives color

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Shangtung Maple(Acer truncatum)

• Evenly moist soil
• Beautiful fall foliage orange to red to yellow
• Trained as a single trunk but multiple trunk is
  more attractive

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Weeping Katsura Tree(Cercidiphyllum japonicum)

• Part shade to full sun
• Great specimen or accent
• Yellow fall color
• Somewhat drought tolerant

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Redbud(Cercis canadensis)

• Great spring flowers
• Widely tolerant of conditions
• Yellow fall color
• Bean pods
• Cultivar selection important

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Whitebud
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Forest Pansy
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Covey
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Silver Cloud
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Traveller
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Kousa, Korean Dogwood

• Analog of native
• Resistance to anthracnose
• Leaves and flowers emerge at same time
• More sun tolerant than native

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Hawthorn(Crataegus spp.)

• Flowers profusely in spring
• Often confused as a crabapple
• Beautiful wide shape
• Some species have thorns!

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Possum Haw Holly(Ilex decidua)

• Native
• Winter fruits relished by birds
• Multiple seasons of interest

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Magnolias

• Too many to cover
• Small to large trees
• Deciduous species smaller
• Size greatly varies by cultivar, choose carefully

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Crabapples(Malus sp.)

• The most spectacular flowering tree
• Very tolerant of soil conditions
• Multiple seasons of interest
• New cultivars no longer drop fruits and are
  disease resistant!

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Japanese Snowbell(Styrax japonicus)

• Underused species
• Great accent tree by entry or patio
• Often grown with multiple trunks
• Slow grower
• Prefers afternoon shade

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Foster Holly(Ilex attenuata)

• Evergreen
• Wildlife interest with berries and cover
• Great accent plant or screen
• Can be shaped to be formal

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Japanese Red Pine(Pinus densiflora)

• Each tree is uniquely shaped
• Twisted, contorted
• Excellent for larger areas
• Great large specimen

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