October 8, 2008

Winter Protection for Chrysanthemums

Chrysanthemums are shallow-rooted plants. Repeated freezing and thawing of the soil during the winter months can heave plants out of the ground and cause severe damage or even death.

Winter Protection for Roses

Most hybrid tea, grandiflora, and floribunda roses require winter protection in Iowa. The low temperatures and rapid temperature changes in winter can severely injure and sometimes kill unprotected roses.

Ash Spider Mite Webbing On Tree Trunks

Again this year a very small number of Iowans have been treated to a most unusual, pre-Halloween phenomenon: ash trees shrouded in webbing.

Plant and Insect Diagnostic Clinic Update - October 8, 2008

The following are a few of the samples or questions received the past two weeks.


Wormy Acorns and Hickory Nuts