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October 9, 2002

Hort101 Lab Cornell Plantations Arboretum

Entrance to the Plantations arboretum.

Cork Tree

Crab apple malus toringo.
The Plantations evaluates crabapples for their performance and disease resistance. They have quite a collection of them.

Evidence of sooty mold. It comes from aphid sap that collects on leaves. Although this particular tree is not a favorite of aphids ...

Sycamore leaf showing stippling from lace bug (the leaf is covered with them) and a momma spider.

Different examples of trees gone wrong. These are from old growth trees (sugar maple) in the Fall Creek area. Branches break, and water enters the area. The trunk then rots inside and weak spots occur, eventually causing the trunk to split. A proper cut will compartmentalize the damage.

The staff arborists talk about their jobs.

Climbing a tree is demonstrated.

Throw ball. This weight (about 1.5 pounds) is used to get the ropes up in the trees.
The arborist's utility belt. Much of their equipment is modified rock climber's gear.
A blake hitch, or blake knot.

Posted by roosterh at October 9, 2002 12:40 PM

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