What does fear of trees is known as?

Dendrophobia

The answer is ☀ Dendrophobia. Dendrophobia is the fear of trees. It is an irrational or disproportionate fear that can cause people to avoid trees altogether, or to experience severe anxiety when they are around trees.

The other phobias you mentioned are:

• Pyrophobia is the fear of fire.
• Pathophobia is the fear of disease.
• Acrophobia is the fear of heights.