After the subterranean termite, the western drywood termite, Incisitermes minor, is California's second most important termite pest.
Drywood termites are difficult to detect. They live deep inside wood and except during periods when they swarm or when repair work is being done on infested homes, they are seldom seen. The most common sighting of drywood termites is when flying adults (or “swarmers”) are seen during daytime hours in summer and fall. Dampwood termites also can swarm during summer and fall, but they can be differentiated from the western drywood termite based on their larger size and attraction to lights at dark.
Because of the difficulty in detecting drywood termites and determining the...
People sometimes don't recognize scales as insects, but understanding scale types and signs of their presence will enable you to best manage them if encountered on your plants.
Scale insects are circular, elongate, or oval insects that often resemble discolored or raised areas on bark, leaves, or fruit. Scales are small and mostly immobile and damage many types of trees and shrubs by sucking out plant juices with their tiny, strawlike mouthparts. Infestations can cause yellowing or premature dropping of leaves, sticky honeydew, and blackish sooty mold. Plant parts can distort or die back, depending on the species and abundance of scales.
Although most plants...
- Author: Igor Lacan
In the December 2013 issue of the Green Bulletin, we looked at “Pruning and Tree Physiology: The Bad and the Ugly” for pruning and maintaining ornamental trees as well as some pruning pitfalls. However, pruning can also be highly beneficial for many landscape trees. In this article I will review some approaches to pruning which either directly suppress pests or which maintain tree health, and because impaired health predisposes trees to a number of diseases, these pruning measures could thus be considered a part of an integrated pest management program.
Formative pruning: A young tree arriving from the nursery or...
[From the August 2014 issue of the Green Bulletin, a newsletter for landscape and structural professionals]
While one of the best methods to reduce weeds is to not water them, there are some that survive even in drought conditions (Fig. 1). As we continue to be impacted by the drought in California, we need to consider our weed management strategies:
- Which weeds will survive?
- How do drought conditions affect control?
Which weeds will survive?
Many weeds, once established, need very little water to survive. Weeds with extensive, deep root.../span>
- Author: Cheryl Reynolds
As summer is quickly coming to a close, and most kids have already headed back to school or will be returning in the next couple of weeks, integrated pest management will be an expected and important tool for the upcoming school year. Classrooms, playgrounds, and athletic fields that were quiet during the summer months will once again be filled with the sounds of learning and playing. Landscape and pest management professionals have been taking advantage of the slow summer months preparing the grounds and facilities for the upcoming year. While at one time this may have meant heavy applications of pesticide to rid the facilities of pest problems, today schools are healthier environments for our...