RE: aphids and mandevilla

At 03:36 PM 12/20/00 -0800, you wrote:
>Claire,
>  The only times I have had white flies is on Fuchsias.  My GH is so packed
>in winter that if I let them get started, it will be a disaster for me.  I
>have been able to nip an infestation in the bud with just the sticky bars,
>BUT - I removed the offending Fuchsias to the outside and it was sink or
>swim for them.  I simply couldn't risk letting them stay in the GH.  I would
>shake the basket several times a day so the whiteflies would fly up, swarm a
>little and stick.  For insurance the offending plants were also sprayed with
>insecticidal soap.  Otherwise I use the sticky bars for fungus gnats and to
>monitor for aphids.  They will always catch a few aphids and that causes me
>to hunt for the offenders and spray them with soap also.  I don't know if I
>have just been lucky, but it seems to work.
>  The worst problem in the GH for me off and on has been mealy bugs.  Oh my,
>that is a long sad story.  I have had to toss so many of my tropical
>Begonias, Streptocarpus and Hoyas because of them until I finally found a
>product that gives great control. I suppose mealies can get on perennials,
>but they seem to prefer the tropicals in my GH.   I have never had them on
>anything outside, but I'll bet it is possible in warmer climates.
>I always get spider mites on my overwintering Brugmansias, but after they
>are put outside for the summer, the mites go somewhere else until the next
>winter.  I don't have a clue how to control them other than misting and
>spraying as often as possible.
>Marilyn Dube'
>Natural Designs Nursery
>Portland, Oregon
What did you find that controlled mealybug scale?  Margaret L


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