Testing Services
Step 1: Is it normal? Walnuts (right) typically break bud late in western Oregon while other plants such as cherry (left) have been growing for several weeks.
Step 2a: Look for patterns in the community. All the strawberries do not look the same in this picture. The circular areas have both Verticillium wilt and nematode problems.
Different plants in this community have the same problem along the edges of this nursery bed. Roots froze during a winter cold period.
Step 2b: Look for patterns on individual plants. This Christmas tree has lost many lower needles due to Lophodermium needle cast.
Step 2c: Look for patterns on plant parts. Ringspots and line patterns on these Kalmia leaves indicate necrotic ringspot virus infection.
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