A-Z Index
Statewide
zzusis
WSU Home
WSU Extension
Hortsense
Hortsense Home
|
Hortsense fact sheets
| Common Cultural Problems
| Needle loss
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
print version
|
pdf version
|
email url
Caption: Pine natural needle drop
Photo by: R. Maleike
Common Cultural : Needle loss
(revision date: 4/30/2013)
Use Integrated Pest Management (IPM) for successful plant problem management.
Biology
Conifer trees periodically shed older needles. In the early fall following a dry summer, western red cedar often dramatically shed older needles; this is known as cedar flagging. Broadleaf evergreen plants also show periodic dropping (abscission) of older leaves. This is a natural biological process and not cause for concern in most instances.
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
+ Show larger images
Caption: Pine natural needle drop
Photo by: R. Maleike
Caption: Cedar flagging
Photo by: R.S. Byther
Caption: Cedar flagging close-up
Photo by: R.S. Byther