University of California
Urban and Community Integrated Pest Management
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Armillaria Root Rot in Landscape Trees
What is Armillaria Root Rot? Armillaria root rot is a severe fungal disease that affects trees, woody plants, and some herbaceous plants including palms and succulents. Also known as oak root fungus, Armillaria root rot can rapidly kill trees and...
When Monitoring Is the Best Action - The Case of Two “Flux Diseases”
![Figure 1. [J.K. Clark]](http://ucanr.edu/blogs/UCIPMurbanpests//blogfiles/38768small.jpg "Figure 1. [J.K. Clark]")
[From the August 2016 issue of the UC IPM Green Bulletin] Two “sap flux” diseases observed in landscape trees—bacterial wetwood (or slime flux) and alcoholic (“foamy”) flux—often trigger demands that a landscaper...
Pruning and Tree Physiology: The Bad and The Ugly
[From Dec 2013 issue of the UC IPM Green Bulletin newsletter] Pruning in Practice Pruning is perhaps the most common tree maintenance activity that is undertaken on urban and ornamental trees. This is in sharp contrast with forest trees, which are...
