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pleurothallid-l - RE: [pleurothallid-l] Dryadella edwallii and some others

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  • From: "Bell-Games, Tom" <tbellgames@burnip.com>
  • To: <pleurothallid-l@lists.ibiblio.org>
  • Subject: RE: [pleurothallid-l] Dryadella edwallii and some others
  • Date: Fri, 14 Nov 2003 09:33:08 -0500

In my experience, this type of sudden leaf drop is typical of a bacterial
infection due to excessive moisture/stagnant air. Unfortunately, it can wipe
out a plant very quickly. I would suggest taking this out of the enclosed
growing area. Dryadella edwallii is fairly ammenable to warmer drier
conditions when compared to the others you mentioned. You might want to
spray this with a dilute solution of Physan or similar. Place it in an area
that gets a good bit of air movement. The idea is to keep the leaves dry,
especially near the base of the plant - where bacterial rot causes the leaves
to drop.

On S. grande, I find this likes fairly high humidity, good air movement, and
not so much light. Similar for the Dracula chimaera. However, I have heard
some say that Draculas do better with more light than generally thought.
Humidity and air movement are most important though. They do seem able to
take drying out - constantly soggy sphagnum is no good.

It might not hurt to spray everything with Physan to help control any
bacteria that are itching to take over.

My two cents.

Tom Bell-Games




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