Are the needles being shed on the current growth increment or are they
shedding from previous years wood?


--
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.

wrote in message
...
I work for a landscaping company in the nursery & one of the Concolor
Fir's has needles turning brown & dropping. I've been googling it & so
far I've read that old needles will drop... These Fir's are about 12
ft tall if not a little taller & established in the ground. Is it a
safe bet that they're just old needles falling off? The older gal I
work with usually knows these kinds of things like the back of her
hand but she was somewhat confused by it as well. I'm hoping I can
give her an answer.

I appreciate the feedback.
Thanks!