Teri,
 
    An aphid tree is not a specific species of tree but one that is 'infested'
    with aphids.  The aphids feed on the plant juices and produce a sugary
    exudate.  (Park your car underneath one of those trees and you know what we
    are talking about!).
 
    The exudate is collected by bees (and other insects, including wasps) and
    utilized as 'nectar' source.  The resulting product is called honeydew.
 
    In Europe, honeydew has been a priced product for centuries.  Some regions
    are reknown for their honeydew.
 
    regards,
 
    Paul van Westendorp                         [log in to unmask]
    Provincial Apiculturist
    BC Ministry of Agriculture,
        Fisheries & Food