Jim,

Curious to know what Arum you house in a cold frame vs. planting them
outside. I know the topic of Arum hardiness has been discussed several
times, but I find very few of the species on the tender side (those that
died may not have been due to tenderness).

I grow the following outside for more than two winters with lows to 7F
and nearly a week, last year, of high daytime temperatures below freezing.
This winter has not been a challenge for anything. None of these get
special treatment; no amended soil, extra mulch, near the house, etc.
Surprisingly A. pictum looks better outside than concinnatum, hygrophilum,
and one clone of italicum from southern Italy. Arum idaeum and A. apulum
died the first winter here, but was not likely cold that did it.

Arum albispathum
Arum alpinum 2-4 clones
Arum aff. byzantinum
Arum concinnatum 4 clones
Arum creticum ex Pilous
Arum dioscoridis
Arum hygrophilum
Arum italicum numerous clones
Arum maculatum
Arum nigrum 2 clones
Arum orientale
Arum pictum ex Ceni
Arum rupicola 2 clones
Arum sintensii

Aaron
Knoxville, TN zone 6-7

--- On Fri, 2/17/12, Jim McKenney <jamesamckenney@verizon.net> wrote:

From: Jim McKenney <jamesamckenney@verizon.net>
Subject: [pbs] Major excitement in the cold frame
To: "Pacific Bulb Society" <pbs@lists.ibiblio.org>
Date: Friday, February 17, 2012, 12:32 AM

the cold frame is seriously overcrowded (the Arums have to go),
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