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Re: Scale infestation on Davallia and Nephrolepis ferns

  • Subject: Re: [ferns] Scale infestation on Davallia and Nephrolepis ferns
  • From: "Mary Gorton" mgorton@centuria.com
  • Date: Wed, 21 Jan 2004 19:16:36 -0500

Thanks, Duane.  Orthene sounds good.  I think it will be enough in this
case.  I don't want to do any more damage than I have to.  If I keep killing
the babies when they come out to eat, I would think the mamas would
eventually die of old age.  I know about the Ivory.  The flakes contain
detergent also.  I get the bars and scrape flakes off with a knife, then
dump them in water overnight to dissolve.


----- Original Message -----
From: "Duane Petersen" <dpetersen11@cox.net>
To: <ferns@hort.net>
Sent: Wednesday, January 21, 2004 12:45 PM
Subject: Re: [ferns] Scale infestation on Davallia and Nephrolepis ferns

> Orthene wettable powder works well on scale because it is absorbed by
> the plant and kills the scale as it feeds.  I use a tablespoon per
> gallon.  It is usually available at feed and seed stores or stores
> catering to farmers.   It smells like crazy in the can, but when mixed
> with water it is much better smelling (relative of course).  Put it on
> every week for about 3 weeks, and then about once a month.   I have, out
> of desperation used the following treatment to kill the mama scales that
> live underground and send out generations of little children.   One
> tablespoon of ivory soap (watch out as the dishwashing liquid is, I
> hear, now a detergent formula) and one tablespoon of malation 50 (xylene
> carrier instead of petroleum).   This is mixed with a gallon of water
> and then I cut off most of the foliage and then soak the plants out of
> the pot in this mix.   This will damage your ferns, but should not kill
> davallia and nephrolepis.   Don't use this on maidenhairs unless you
> like going to plant funerals.  D. Petersen
> Mary Gorton wrote:
> >I have scale on my Davallia and Nephrolepis ferns.  Does anyone know how
I can
> >get rid of them without killing my ferns?  Thanks.
> >
> >Mary Gorton
> >Delaware USA
> >
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