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University of Nebraska–Lincoln
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Institute of Agriculture and Natural Resources
Turf & Weeds
Rots & Spots
Plant & Pest Diagnostic Clinic
Amphibians Turtles & Reptiles of Nebraska
Nebraska Extension Wildlife
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When do I prune my spring flowering shrubs?
My ornamental plum tree has large black swellings on several branches. What is this and will it kill my tree?
Black knot gall
This Japanese Weeping cherry has developed a split and several of the limbs are starting to grow up and not down. What can I do?