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[Arisaema Enthusiast Group (AEG) Discussion List (and other=]

hardy  Aroids)" <ARISAEMA-L at NIC.SURFNET.NL> Aroids)" <ARISAEMA-L at NIC.SURFNET.NL>
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From: irisman <irisman at AMERITECH.NET>
Subject: Re: Hardy table
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Hello Andy.   Your observations fit the pictures of arisaema that Chen Yi
posted.  Most of them seem to have been located on relatively steep slope=s,
in quite rocky soil, not in "beds" where people put too much humus over t=hem
and perhaps suffocate them--in any case, changing the likelihood of adequ=ate
aeration.  Other "wildflowers"and geophytes not native to garden conditio=ns
in the U.S. may appear to be growing in leaf litter in the wild , but are
often located  below the leaf litter at the margin of the soil horizon wh=ere
the actual dirt   or rocky substrate  begins.  Are observations  of growi=ng
conditions, e.g., where the tuber is located in relation to soil horizons
available?

I've got to admit, I'm hunting for an easy nswer, not having had the time=to
look through the archival stuff already posted.  To anyone who wants to p=ost
on this topic--  Thanks in advance.  Adam Fikso






----- Original Message -----
From: "Andy Y.S. Wong" <asiatica at NNI.COM>
To: <ARISAEMA-L at NIC.SURFNET.NL>
Sent: Friday, March 15, 2002 5:48 PM
Subject: Re: Hardy table


> Tony has identified many of the most persistent arisaemas (I would add
> robustum and consanguineum) and it raises a question in my mind about
> what sort of hardiness we are discussing.  All the species listed by
> Tony (and please Tony let's put to rest "taiwanensis"; it is taiwanense
> regardless of what the Heronswood catalog says) have in common that the=y
> tolerate imperfect drainage.  I think most arisaemas in the garden are
> lost because of drainage issues, not cold-hardiness.  We have come to
> the point where we plant arisaemas either in raised beds or on fairly
> steep slopes in well-drained loam.  It makes a lot of difference in
> persistence.
>
> We grow at least 40 kinds of arisaemas outdoors, and many of these have
> been outdoors for years.
>
> We think it is really almost all about drainage.
>
> One other factor is the exposure to early spring warmth.  If the early
> risers are sited to not get early spring sun, as on the north side of
> evergreens or some barrier, they emerge later and escape frost.
>
> Barry Yinger and Andy Wong
> USDA Zone mid 6 Pennsylvania USA
>
> Tony Avent wrote:
> >
> > Al:
> >
> >         There is no question that some Arisaema species are more robu=st
and longer
> > lived than others. For us, A. saxitale, A. ringens, A. thunbergii, A.
> > urashima, A. amurense, A. candidissimum, A. ciliatum, A. fargesii, A.
> > franchetianum, A. heterophyllum, A. kiushianum, and A. taiwanensis ha=ve
> > been the most vigorous and long lived.  I hope this helps.
> >
> > Tony Avent
> > Plant Delights Nursery @
> > Juniper Level Botanic Garden
> > 9241 Sauls Road
> > Raleigh, NC  27603  USA
> > Minimum Winter Temps 0-5 F
> > Maximum Summer Temps 95-105F
> > USDA Hardiness Zone 7b
> > email tony at plantdelights.com
> > website  http://www.plantdel.com
> > phone 919 772-4794
> > fax  919 772-4752
> > "I consider every plant hardy until I have killed it myself...at leas=t
> > three times" - Avent
>