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Plant Health Care Report 2014-10

The Scouting Report of The Morton Arboretum for June 20, 2014 10 June 20.pdf

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What indicator plant is in bloom at the Arboretum?
Catalpa (Catalpa speciosa) is in full bloom (Figure 1)
Accumulated Growing Degree Days at The Morton Arboretum
Accumulated Growing Degree Days (Base 50): 718.5 (as of June 19)
Accumulated Growing Degree Days (Base 30): 2256.5 (as of June 19)
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Insects

  • Leafhoppers
  • Kermes scale
  • Sumac flea beetle
  • Flower thrips
  • Parasitic wasp attack
 
Diseases
  • Guignardia
  • Cercospora leaf spot
  • Phyllosticta leaf blight
  • Black spot of elm
 
Miscellaneous
  • Chlorosis