WSU Extension

Hortsense

Common Cultural Problems
 
Air pollution 
Chlorosis 
Construction damage 
Desiccating wind 
Drought damage 
Fasciation 
Fertilizer burn 
Frost injury 
Hail damage 
Lime-induced chlorosis 
Marginal leaf necrosis 
Morphological changes 
Mosses and lichens 
Needle loss 
Needle tip necrosis 
Nutrient deficiency 
Oedema 
Overwatering or poor drainage 
Plant girdling and circling roots 
Poor pollination 
Salt damage 
Sunscald 
Transplant shock 
Winter desiccation 
Winter injury 



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Caption: Air pollution damage on dahlia
Photo by: R.S. Byther
  
Common Cultural : Air pollution
(revision date: 4/30/2013)


Use Integrated Pest Management (IPM) for successful plant problem management.

Biology
Generally, air pollution damage in the Pacific Northwest has been considered limited. Sulfur dioxide damage from large industrial emissions has been known to cause interveinal bleaching on dahlia, interveinal spotting on lilac, and needle banding on pine.
Management Options


Non-Chemical Management
None recommended
Select non-chemical management options as your first choice!

Chemical Management
IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides

None recommended

Images

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Caption: Air pollution damage on dahlia
Photo by: R.S. Byther
Caption: Air pollution damage on lilac
Photo by: R.S. Byther
Caption: Air pollution damage on pine
Photo by: R.S. Byther