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Re: cultivation problems

At first thought it sounds like very dry air....could this be possible ?
50-60 degrees is ok in the winter but if they are not getting enough natural
sunlight less watering may be in order...remember the cooler the air temp
and the less light, both length and intensity, the less water...warmer temps
and longer days with stronger light ....more water.  If you suspect very dry
air possibly a humidifer would help the tips from drying out.

Bob S,
.


----- Original Message -----
From: David M Karesh PhD <karesh@AMERITECH.NET>
To: <SANSEVIERIAS@MAELSTROM.STJOHNS.EDU>
Sent: Sunday, January 02, 2000 12:48 PM
Subject: [SANS] cultivation problems


> I hope some of you gurus out there can help me.  I'm having several
> cultivation problems.  Several of my cylindrical shaped Sansevierias
appear
> to be drying up from the tip of the leaf downward.  The dried part looks
> completely desiccated or dehydrated. This is a very slow process.  They
are
> under 400 watt halogen lights in a sun room that gets as cool as 65
degrees
> at night and up to about 75 degrees in the daytime.  They get from 300-500
> fc light for 10 hours daily.  They get some natural sunlight but not much
as
> its winter in Ohio.
>
> A related problem, is that my Bantells Sensation seems to be withering up
or
> drying up from the tip down words on just 1 leaf at a time (oldest
growth).
>
> I'm using electric heaters so I know it can't be fumes from natural gas
> (which was my problem last year).  I'm really wondering whether it's too
> much or too little water, and how to tell.  I have been watering them when
> dry (not always bone dry) using a moisture meter--which comes out to every
> week for small pots to every 1 - 2 weeks for larger pots.  The ones
> withering are all in large pots.
>
> Any suggestions?   Thanks in advance.
>
> David Karesh in cloudy Dayton OH.
>
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