May 19, 2000

European Pine Sawfly


NOW is the time to be checking pine trees for needle feeding damage by the larvae of the European pine sawfly. Pine sawfly larvae can be present any time after mid-May. The small larvae can only chew the edge from the needle, but as they grown, they consume more and more of the needle until eventually they are eating the entire needle down to the stub. Defoliation lasts for four to five weeks and usually peaks near the end of May.

Hollies Suitable for the Iowa Landscape


Holly is a plant often associated with the Christmas season. Their glossy, green leaves and brightly-colored fruit are often used in wreaths, centerpieces, and other decorations. Unfortunately, most holly species are not reliably hardy in Iowa. However, winterberry, inkberry, and several Meserve hybrid hollies can be successfully grown in the state.

Iowa Regional Collection Centers


During the past several years, the Department of Natural Resources (DNR) has been phasing out Toxic Cleanup Days in favor of Regional Collection Centers. These collection centers give residents increased opportunities to dispose of hazardous waste because they have set business hours; thus, residents can dispose of their hazardous waste when it is convenient for them. In addition, most regional collection centers have mobile units that travel to each town in their service area to collect hazardous waste.