PHC on the Lookout – Scale 101

Scale insects are a large group of different species that vary in size, color and shape. Host plants include commonly used shade trees, evergreens, shrubs, groundcovers and others. Heavy infestations can seriously debilitate the host plant, possibly killing the plant if infestations continue year after year. 2016 has seen the return of many scale species […]

PHC on the Lookout – Got Scale?

Scale insects are a large family that feed on a wide range of host plants and have many different appearances. Scale is usually divided into two categories: armored and soft body scale. Armored scale insects, in the adult stage, have a hard outer cover that makes treatment timing critical. All scale insects have a series […]

PHC on the Lookout – Dormant Oil Spray Applications Starting!

Just as the name indicates, dormant oil is an oily product that is sprayed on plant foliage during the plant’s dormant season. It is a relatively safe method for controlling certain plant attacking pests, in that it does little harm to beneficial insects, birds and animals. The Plant Health Care Department has begun dormant oil […]

PHC on the Lookout – The Benefits of Dormant Oil

Just as the name indicates, dormant oil is an oily product that is sprayed on plant foliage during the plant’s dormant season. It is a relatively safe method for controlling certain plant attacking pests, in that it does little harm to beneficial insects, birds and animals. In the Chicago area, this application is typically made in […]

Pest to Watch For – Oystershell Scale

 Illinois is home to two species of the Oystershell Scale, the brown and the gray Oystershell  Scale.  While this pest is found in many states, northern areas are hit harder than southern states.    Because of the size and color of this pest, it blends into the environment, delaying detection and allowing heavier infestations to occur.  […]