selection of trees

7/28/2019 Selection of Trees

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1. List factors that determine how a tree isselected for the landscape.

2. List & discuss the types of trees that canbe used in the landscape.

3. Describe the 3 forms in which trees aresold.


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The selection of a tree is determined by acombination of several factors:

- the height of the tree

- how low to the ground it branches- the density of its foliage

- whether it is deciduous or evergreen

- seasonal color, foliage, texture, & whetherit bears flowers &/or fruit


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Trees are available and usable as:

- Native

- Exotic

- Naturalized


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Native trees are those whichevolved through nature within a

certain locale.

Examples: Eastern White Pine &Douglas Fir


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Exotic trees are those that have been introduced to anarea by individuals, not nature.

Exotic trees often transplant more easily than nativesand have fewer insect & disease problems.

Approximately 60% of trees planted in the U.S. are

exotics.

Examples: Junipers & Yews


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Naturalized trees are those which were brought into anarea as an exotic, but have adapted so well that theyhave escaped cultivation.

This means that they now occur commonly in & out ofplanned landscape settings.

Ex. Barberry


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Trees are purchased from a nursery & sold in oneof three forms:

- Bare Rooted

- Balled & Burlapped (B & B)

- Container Grown


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A bare rooted tree is one that hasbeen dug from the nursery field with

the soil washed away from its rootsystem.

It may be wrapped in moss & a

plastic covering, dipped in wax, orbe completely free of covering.


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Advantages:

- lightweight & can be easily stored

- least expensive way to purchase trees

Disadvantages:

- severe reduction of the root system caused by

the processing- planting is limited to the early spring & late

fall


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With the balled & burlappedmethod, the plant is removed from

the ground with a ball of earth intactaround the root system.

The soil ball is then wrapped with

burlap & tied.


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Advantages:

- plants root system is disturbed to a lesser

extent

- can be planted later into the spring season

Disadvantages:

- weight of the tree is increased, making it

harder to handle

- trees cost more


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Advantages:

- can be transplanted into the ground at almost

any season

- cost is less than the B & B method

Disadvantages:

- trees are small

- cost is more than for the bare-root method


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selection of trees

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