apple cedar rust balls
 

I do not know the botany term for these brown orange balls of apple
cedar rust found on cedar trees. Perhaps galls?

Anyway I notice they are abundant on low lying limbs near the ground and
especially on young cedar trees. But on the older ones, those so tall
that I cannot even reach the lowest limbs, I find none of these rust
balls. Is this just circumstantial to my cedar trees or is it common
that the rust affects only young trees and limbs close to ground.

Archimedes Plutonium
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