1. A generous handful of feeder roots and 1 quart of soil should be collected from plants that have slight-to-moderate symptoms. The roots and soil should be placed together in a plastic bag and sealed. If plant is a juniper, cedar, pine, or fruit tree, pieces of large roots should be included (if rotted) in addition to the feeder roots. Early stage of root rot is needed for an accurate diagnosis.

2. Several branches or large twigs which show a range of symptoms should be placed in a separate plastic bag.

3. If there are known injuries, cankers, or discolorations on roots, large branches or trunk, this should be mentioned on the form.

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