[OGD] Q&A : scales

  • From: viateur.boutot@xxxxxxxxxxxx
  • To: orchids@xxxxxxxxxxxxx
  • Date: Sun, 17 Jul 2011 10:35:16 -0400

"Q. I have several orchids and one of them has small black things on the 
underside of the leaves.
[A :] It sounds like scale insects ("bumps" on leaves or stems that can be 
easily rubbed off).

If it is scale, use rubbing alcohol on a cotton swab to wipe the scales away.
Repeat as necessary.
Avoid getting too much alcohol on the leaves.

If you have a lot of infested plants, place them away from your other 
orchids and spray with an ultra-fine horticultural oil late in
the day.
Once the scales are under control, you can move the plants back into your 
orchid collection."

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