Plant Health Care Report Issue 2014-1

April 4, 2014

The Scouting Report of The Morton Arboretum for April 4, 2014.

Quick View

What indicator plant is in bloom at the Arboretum?
Diane Hybrid Witchhazel (Hamamelis x intermedia ‘Diane’)

Accumulated Growing Degree Days (Base 50): 0 (as of April 3)
Accumulated Growing Degree Days (Base 30): 168 (as of April 3)


  • What are degree days and why do we care about them anyway?
  • Winter weather
  • Winter damage (especially evergreens)
  • Animal damage to trees and shrubs
  • Crabgrass preventer


  • Egg masses
  • EAB and the cold (the truth)


  • Snow mold in lawns


  • Voles in lawns