FOREST HEALTH ALERT: Jumping Oak Gall
By Rob Lawrence Forest Entomologist Forest Health Program Missouri Department of Conservation – June 2008 Problem: Leaves on entire crowns of white oak trees turn brown in early summer. In some cases, whole hillsides appear to be browning. Individual leaves turn brown starting at the margins, and sometimes curl up [...]
Winter Stresses on Trees & Shrubs
By Tchukki Andersen Tree Care Industry Association, www.tcia.org Winter heavy snow and ice, as well as frozen soil conditions, can damage cherished trees and shrubs in suburban landscapes. Even areas without major snowfall experience high winds and huge fluctuations in temperatures during winter. But homeowners can lessen the adverse effects [...]
Arbor Age Pest of the Month: Golden Oak Borer
Editor’s Note: This article, by Jesse Lee, appeared in December 2008 issue of Arbor Age magazine. It is posted here with permission from Arbor Age and is not intended for reprint or republication. For more Arbor Age articles, visit www.arborage.com.
Arbor Age Tree of the Month: ‘Shamrock’ Littleleaf Linden
Editor’s Note: This article, by Len Phillips, ASLA Emeritus, appeared in December 2008 issue of Arbor Age magazine. It is posted here with permission from Arbor Age and is not intended for reprint or republication. For more Arbor Age articles, visit www.arborage.com. Botanical Name: Tilia cordata ‘Bailey’
Horticultural oils – what are they?
What are horticultural oils & what do they do? Answer Horticultural oils are ultra fine, manmade oils with no toxic properties. They are used as a pest control. The oil irritates the insects & suffocates the eggs of many different kinds of pests. There are a variety of horticultural oils available (some [...]