Re: aphids and mandevilla

In a message dated 12/21/00 6:13:21 AM Eastern Standard Time, Meum71@aol.com 
writes:

<< Two weeks ago when I was over there, the Impatiens were just starting to 
open 
 up a lush flush of bright white flowers. Would have been nice for Christmas.
 
 They wanted to know how to control them-and I said that they should put the 
 plant in large bag and spray some insecidal soap and seal up the bag for a 
 few hours.  >>

Paul writes on Impatiens and whitefly.  For me it has always been mites and 
Impatiens.   A speaker before a club meeting I attended years ago recounted 
the many ways she tried to bring Impatiens through the winter.  I suppose if 
you have a double flower or variegated leaf you might persevere.

On way was to put the cuttings in a jar of soapy water, completely submerged 
for three days, drowning I guess. Another was to grow the plant in the 
bathroom and include it in her showers.  There were more but it seeems to me 
the end result was the mites always won with Impatiens.  Growing from seed 
gives relatively clean plants but if started early and near any natural soil 
you can still have a crop of mites.

Kelthane kills mites and the effect lasts more than six weeks.  You cannot 
buy large amounts of Kelthane and you must use it outdoors.    I bought mine 
at a farm store where I was told the very small size was all that could be 
sold to a greenhouse gardener.  At the same time they filled orders for forty 
pound cans of it for cherry orchards, farmers with pesticide licenses.  

I spray my plants in the fall and bring in a few days thereafter (Kelthane 
has a strong odor).  Take care if you live near cherry orchards.

Claire Peplowski
NYS z4

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