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Re: (no subject)

Colette,

As far as the your first question I would check the manufacturer's
instruction with regard to young plants.  I believe some fungicides may be
more toxic to young leaves and new growth than others.  If you don't see any
fungus on the plants yet you might want to wait until the plants have been
planted and have kind of adjusted to their new environment.  But if your
area is prone to problems with these fungi you have start controlling the
problem as soon as you see any signs of it.

With regard to the neem oil, I've used it on rose plants for controlling
powdery mildew and blackspot, but you have to spray regularly and start
before the fungus has gotten out of control. Neem oil is sold as the active
ingredient in "Rose Defense" (sold under the Greenlight brand name).  Its
considered environmentally friendly because it is extracted from the seed of
the neem tree which grows in India and is pretty much nontoxic to people and
animals (from what I've read).  I've not used the Funginex product so I
can't tell you too much about it.

Javier

At 11:37 AM 4/10/00 -0800, you wrote:
>
>re: FUNGICIDES ON ROSES:
> 
>I just purchased some own-root "baby" roses this week.  Should I spray them
with Funginex
>for preventing powdery mildew/rust, or are these plants too young to be
sprayed? (I know
>these products are toxic.
> 
>Also, has anyone used "neem"?  I read about this in Roses for Dummies, but
my local garden
>center has never heard of this.  Is this new?  Better than Funginex?
Environmentally
>friendly?  It apparently works against fungi and aphids too!
> 
>Thanks
>Colette (Kelowna BC, zone 6)
>
>_______________________________________________
>rose-list maillist  -  rose-list@mallorn.com
>https://secure.mallorn.com/mailman/listinfo/rose-list
>
>

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Javier Castillón, Ph.D.
USDA-ARS, U.S. National Arboretum
Floral and Nursery Plants Research Unit
Rm 238, Bldg 010A, BARC-West
10300 Baltimore Ave.
Beltsville, MD 20705
USA

e-mail:   jcastill@asrr.arsusda.gov
phone:  (301) 504-5469, ext. 229
fax:  (301) 504-5096
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


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