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Wed Jun 10 14:51:53 CEST 2009

hardy  Aroids)" <ARISAEMA-L at NIC.SURFNET.NL> Aroids)" <ARISAEMA-L at NIC.SURFNET.NL>
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From: "Mellard, David (ATSDR/DHAC/SRAB)" <dam7 at CDC.GOV>
Subject: Arisaema flavum
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I need a break from writing about PCB toxicity so thought I would report
to the group my experience with growing Arisaema flavum.  I've tried it
in the garden but it doesn't tolerate Atlanta's wet winters but 3 potted
plants are doing fine.  The tubers are potted in Metro Mix, a soil-less
mix based on milled sphagnum peat moss.  When I pot the tubers, I
usually sit them on Turface and then cover the tuber or most of it with
additional Turface.  This increases drainage around the tuber's surface.
I don't know if this is absolutely necessary but seems like a good idea
for a plant that might not like the excessive moisture from using a
peat-based mix.  All three plants flowered this year and I had a little
bit of fun with an artist's brush to see if I could induce seeds.  I
grow a number of tuberous/bulbous plants this way.  Arisaema
candidissimum grows both in the garden and in pots.  When fall
approaches and the stalks begin to wilt, I move the pots under the front
porch for the winter.  Here they experience Atlanta's zone 7 winter with
the coldest winter lows being around 15 to 20 F (-10 to -6 C).  The
tubers easily tolerate these lows as the pots receive no protection from
the cold but remain bone dry during the winter.  When late spring
arrives, I repot with fresh mix and wait until I see a growth point
emerge from the pot before watering begins. The plants get some Osmocote
if I think about it and are fertilized a few times in the spring with
MSU RO fertilizer at about 100 to 200 ppm nitrogen.

Now, back to PCBs

David
Atlanta  

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<P><FONT SIZE=2 FACE="Arial">I need a break from writing about PC=B =
toxicity so thought I would report to the group my experience with =
growing Arisaema flavum.&nbsp; I've tried it in the garden but it =
doesn't tolerate Atlanta's wet winters but 3 potted plants are doing =
fine.&nbsp; The tubers are potted in Metro Mix, a soil-less mix based on ==
milled sphagnum peat moss.&nbsp; When I pot the tubers, I usually sit =
them on Turface and then cover the tuber or most of it with additional =
Turface.&nbsp; This increases drainage around the tuber's surface.&nbsp; ==
I don't know if this is absolutely necessary but seems like a good idea =
for a plant that might not like the excessive moisture from using a =
peat-based mix.&nbsp; All three plants flowered this year and I had a =
little bit of fun with an artist's brush to see if I could induce =
seeds.&nbsp; I grow a number of tuberous/bulbous plants this way.&nbsp; =
Arisaema candidissimum grows both in the garden and in pots.&nbsp; When =
fall approaches and the stalks begin to wilt, I move the pots under the =
front porch for the winter.&nbsp; Here they experience Atlanta's zone 7 =
winter with the coldest winter lows being around 15 to 20 F (-10 to -6 =
C).&nbsp; The tubers easily tolerate these lows as the pots receive no =
protection from the cold but remain bone dry during the winter.&nbsp; =
When late spring arrives, I repot with fresh mix and wait until I see a =
growth point emerge from the pot before watering begins. The plants get =
some Osmocote if I think about it and are fertilized a few times in the =
spring with MSU RO fertilizer at about 100 to 200 ppm =
nitrogen.</FONT></P>

<P><FONT SIZE=2 FACE="Arial">Now, back to PCBs</FONT>
</P>

<P><FONT SIZE=2 FACE="Arial">David</FONT>

<BR><FONT SIZE=2 FACE="Arial">Atlanta&nbsp; </FONT>
</P>

<P><FONT SIZE=2 FACE="Arial">&nbsp;</FONT>
</P>

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