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: Changing from needle-like to scale-like leaves
Photo by: R. Maleike
  
Common Cultural : Morphological changes
(revision date: 4/30/2013)


Biology
Plant parts may significantly change as a juvenile (seedling) progresses to the adult (flowering/fruiting) stage of growth. Some of the more dramatic changes exhibited by plants include winter leaf retention of deciduous plants (oak, beech, etc.), change of leaf shape (English holly), and the transition of needle-like to scale-like leaves on junipers and false cypresses. Variegated plants may revert to their all-green form, and vice versa. Morphological changes are healthy and natural stages of plant development
Management Options

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

Chemical Management

None recommended

Images

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Caption: Changing from needle-like to scale-like leaves
Photo by: R. Maleike
Caption: White spruce transition of needle form
Photo by: R. Maleike