6. TREE SELECTION WORKBOOK Flashcards
What is the ability of a tree to withstand low temperatures and winter stresses in a given site?
Hardiness
Hardiness is a critical factor in determining which tree species can thrive in certain climates.
True or False—Although a tree may be considered hardy in a given area, it may decline or die if the roots are unprotected.
True
Root protection is essential for the overall health of the tree.
Name three site characteristics that must be considered in tree selection.
Climate
* Soil
* Maintenance
These factors influence the growth and survival of the tree.
What term describes tree forms such as upright, pyramidal, and weeping, which are important in selection?
Habit
The habit of a tree affects its aesthetic and spatial fit in a landscape.
If a particular disease is known to be a problem, a tree species or cultivar should be selected that has low ______ to that disease.
Susceptibility
Selecting disease-resistant varieties is crucial for long-term health.
Name three plant characteristics that may make a tree aesthetically desirable.
Fruit
* Flower
* Birds
These characteristics enhance the visual and ecological value of trees.
What is the gradual process by which a tree adapts to changes in its environment? Usually involves physiological or morphological changes.
Acclimation
Acclimation allows trees to adjust to different conditions for survival.
True or False—A tree listed as adaptable to wet soil conditions will always thrive if planted in those conditions.
False
Adaptability does not guarantee success in all specific environmental conditions.
What is the primary climatic factor that determines hardiness zones?
Low temperature extremes
Hardiness zones are categorized based on the coldest temperatures experienced.
Trees planted under utility lines should be ______ to remain below the lines.
Low-growing
This practice helps prevent interference with utility services.
Some trees acclimate to shade conditions by ______.
Developing larger, thinner leaves
This adaptation helps maximize light capture in low-light environments.
Fastigiate trees have a growth form that is ______.
Upright
Fastigiate forms are useful for narrow spaces in urban settings.
Which of the following is a true statement?
Some tree species are adapted to hot, dry, or bright light conditions with small, thick foliage and sunken stomata.
These adaptations help minimize water loss in harsh environments.
The genetic ability of a species to adjust to different environmental conditions.
Adaptability
A non-native species that has become established in a region and propagates without human assistance.
Naturalized species
Scaffold branches should be free of ______ ____ and be less than half the diameter of the parent stem.
Included bark
Organisms not native or endemic to a region; typically introduced by human activity.
Introduced species
