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Re: Pests and Molds?

The golden orange insects are aphids...it is a specific aphid that likes
milkweeds...they cover my milkweeds each summer but they never seem to kill
them.  My Butterflyweeds come back each year despite the aphids.  If these
are in your backyard, you could spray them with some insecticidal soap
solution (available at your local nursery).  The Black-eyed Susans sound as
if they have some Powdery Mildew.  Mine have it, too, but, they are doing
well.  Some species are more susceptible to mildews than others.  Monarda
fistulosa (Wild Bergamot) will often also get mildew if the weather is
extremely humid or it is not planted in full sun.  It never kills it...just
looks unattractive later in the summer.  I would not do anything about
either of these things.

>I live in northern Illinois and planted my first prairie plants this year
>and most of them are doing very well.  There are two exceptions.  My
>Butterfly Weed is slowly dying after only growing to about 5 inches and is
>covered with numerous golden-orange bugs, about the size of a quarter of
>the head of a pin.  Are these bugs killing the plants and how do I get rid
>of them?  I also have a bluish gray film on my Black Eyed Susans, although
>they seem to be doing fine.  Should I do anything about that?  Thanks for
>any suggestions.
>
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Ruth A. Green, Greenhouse Manager, Supportive Scientist
Illinois Natural History Survey, Center for Biodiversity
607 East Peabody Drive, Champaign, IL  61820
Office:  217-333-7091   FAX:  217-333-6294
Email:  rgreen@mail.inhs.uiuc.edu


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