Deciding What to Do > Pests
 
Plants become weeds when they:
 
 
Compete with desired plants for nutrients, water and space.
 
 
Interfere with the planned use of the site.
 
 
Detract from a landscape's aesthetics.
 
 
Provide food and cover of other pests.
 
 
Are allergens or are irritating to people and pets. Example, poison ivy.
 
 
Present physical hazards. Example, roots damaging a foundation.
 
The risk or problem a pest poses is an important factor in how to control it.
 
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