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 Plant
Problem Diagnosis
How should you collect a sample?
---see examples on right
-
Select
plant material that is showing symptoms of concern and submit
various stages of the problem, especially the early stages.
-
Many
problems originate belowground in and around roots-- include
roots and soil for more accurate diagnosis!
-
Please
do not submit dead, dry, decayed or rotted samples as they provide
insufficient material for diagnosis.
What
information should you provide?
- Detailed
information about plant and its cultural care:
- type
of plant, age, condition of surrounding plants
- site
description (drainage, exposure, weather), irrigation
- pesticide
and fertilizer use (type, rate, date)
Download
appropriate form:
For
ornamental/ home yard plant problems, use Form
C1006
For commercial crops, use Form C0084
How
much does this service cost?
Commercial
plant problems….……… $25
Home garden plant problems……..… $15
Note:
Special tests may incur additional fees.
We
accept payment by cash or check only. Please make checks payable
to WSU Puyallup Plant Clinic.
How
should you package your specimens for shipment?
- Use
a sturdy box for shipping. Wrap fleshy material (such as fruits,
bulbs, or tubers) in dry paper towels or newspaper. Place
roots and associated soil in a plastic bag. Include padding to
prevent injury during shipping.
Where
should you submit your samples?
Mail
packages to:
WSU
Puyallup Plant Clinic
7612 Pioneer Way E
Puyallup, WA 98371-4998
Please
DO NOT mail on a Friday or before any national holiday because
the specimens may deteriorate in transit or over the weekend.
In
person: The Plant Clinic is open Monday through Friday from
8:00 am to 4:30 pm.
Click
here for map and directions.
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EXAMPLES
Wilting,
yellowing, or dieback: Dig up and submit
whole plants (with roots).
Potted
plants:
Send the whole plant, including roots and soil.
Fruit,
leaves, flowers, twigs or branches:
Send specimens showing diseased and healthy tissue.
Vascular
wilt of trees (Verticillium wilt or Dutch elm disease):
Send several branch sections that are ½ to 1 inch
in diameter and about 8 inches long from branches with wilting
or yellowing leaves.
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