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Fact Sheets

Learn more about the pests, diseases, and problems affecting your trees in the greater Seattle area.


Post Planting Guide

This proactive approach diminishes future pruning requirements for mature trees.


Pear Trellis Rust

The disease exhibits a complex life cycle involving two
host plants, Pear and Juniper.


Sequoia Pitch Moth

This chewing moth feeds on coniferous trees such as pines, firs, and spruce.