Over application of nitrogen fertilizer places many trees in a
predisposition to sucking insects. Just ask the xmas tree industry. They
fertilize with the element nitrogen to gain 4" of growth then they have to
get rid of the sucking insects.


--
Sincerely,
John A. Keslick, Jr.
Consulting Tree Biologist
www.treedictionary.com
and
http://home.ccil.org/~treeman
Watch out for so-called tree experts who do not understand tree biology.
Storms, fires, floods, earthquakes, tornado's, volcanic eruptions and other
abiotic forces keep reminding humans that they are not the boss.

"Buderschnookie" wrote in message
...

"Paul Kaye" wrote in message
news:96d64b24-2053-40c7-8e22-

Thanks for your reply. What exactly is a scale? Is it at all
detrimental to the health of the plant or is it just an aesthetic
issue?



Scale are plant sucking parasites, and can multiply rapidly and cause
serious problems if left unchecked.
Fairly easy to control, though.
http://edis.ifas.ufl.edu/mg005



--
Toni
Hills of Kentucky
USDA Zone 6b
http://www.cearbhaill.com