Selecting Trees and Shrubs for Specific Sites February 17, 1999

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Selecting Trees and Shrubs for Specific
SitesFebruary 17, 1999
Jim Chatfield OSU Extension
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Ten Keys to Plant and Site Selection
1. Timing is everything. 2. Read the
site. 3. Test the site. 4. Read the
client. 5. Horticulturists, know they plants.
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All hollies do poorly in wet sites.
A. True B. False
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6. Size does matter. 7. Disease and pest
resistance. 8. Consider all selection
factors. 9. Special situations. 10. Expand
our palettes.
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Plants typically considered acid-loving include
A. River birch B. Red maple C. Pin oak D. All
of the above
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Once planted, it is easy to alleviate iron
chlorosis problems on trees.
A. True B. False
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Viburnum opulus Compactum is a dwarf
cranberrybush viburnum that maxes out at a height
of about two feet.
A. True B. False
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Dolgo crabapple has excellent genetic
resistance to apple scab disease
A. True B. False
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Dolgo crabapple is an excellent choice for a
site near a sidewalk entrance to a hospital
A. True B. False
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Which of the following is not true?
A. Tomatoes are sensitive to juglone from black
walnut trees. B. Adirondack crabapples
are spreading weepers. C. In most cases, tar
spot of maple causes little damage to plant
health. D. Cytospora canker is a common disease
of spruce.
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Flowering dogwoods should be planted in either
full sun or dense shade situations.
A. True B. False
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Which of the following are true?
A. Silver maples should not be planted 20 feet
from your front door. B. Bob White crabapples
have smaller fruits than Dolgo crabapples. C.
Arbor Day looks to the future rather than reposes
in the past. D. All of the above.
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Which of the following three components of the
disease triangle should be considered when making
plant selection decisions.
A. Silver maples should not be planted 20 feet
from your front door. B. Bob White crabapples
have smaller fruits than Dolgo crabapples. C.
Arbor Day looks to the future rather than reposes
in the past. D. All of the above.
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Which plants in each of the following pairs will
do better in wet sites
A. Taxus or Taxodium B. Norway maple or red
maple C. American holly or winterberry holly
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Which of the following parts of Taxus plants are
not poisonous to humans and many animals?
A. Seeds B. Needles C. Stems D. Reddish arils
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The only relevant information on plant hardiness
relates to how low a temperature a plant can
tolerate.
A. True B. False
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The Tree That Grows in Brooklyn was a
A. Sumac B. Mountainash C. Tree of heaven D.
Walnut
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For which of the following plants should
susceptibility to Verticillium wilt disease be a
selection consideration in replant decisions?
A. Smokebush B. Japanese maple C. Redbud D.
All of the above
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Which plants are often called red maples by the
general public?
A. Acer palmatum Japanese maple B. Acer
plantanoides Crimson King C. Acer rubrum
October Glory D. All of the above
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Dr. Treevorkians Ten Keys to Plant Selection

• Plant in wrong place
• Pestiferous trees
• Change the grade
• Limit root area
• Poor nutrition

• Poor pruning
• Excess salts
• Girdling
• Underwater
• Overwater