April 8, 2011

Tagged as: Woolly alder aphid, Arborvitae leafminer, BAGWORMS, emerald ash borer in Illinois, Hemlock needle miner, Plant Health, plant health care, salt damage, winter damage

This issue contains details on many items including: bagworms, hemlock needle miner, woolly alder aphid, arborvitae leafminer, winter damage, salt damage, and emerald ash borer in Illinois

Indicator plant: Diane Hybrid Witch-Hazel (Hamamelis x intermedia 'Diane')

Feature article: What are degree days and why do we care about them anyway? by Donna Danielson

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