International Aroid Society

Hello, Bernhard!

My experience is that Helicodicerosgoes dormant in response to high temperatures and lack of rain, while dormancyis broken by the cold of winter, but occasionally from the onset of rain. =C2=A0Myplants will break dormancy and start to grow in the autumn if I water them,however, they stop growing just below the soil surface. Once the temperaturesdrop down around freezing, they begin growing past the soil surface and intothe full vegetative stage. I hope I am answering your question. Please let meknow if I am still missing your point.

Happy days!

Christopher

D. Christopher Rogers

Senior Invertebrate Ecologist/Taxonomist

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From:aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] OnBehalf Of StroWi@t-online.de
Sent: Thursday, February 18, 2010 11:04 PM
To: Discussion of aroids
Subject: Re: [Aroid-l] Temperature requierements for Helicodiceros

Aroiders,
thanks for your replies to my inquiry and sorry for my latereply=E2=80=A6.

It seems that Christopher is lucky to have the rightmediterranean climate for Helicodiceros.

Dan=E2=80=99s experience seem to indicate that successful growthunder artificial light is not possible.

The different experiences with the hardiness in zone 6 madeby Steve, Tony and Jim W. might have to do with the very growing conditions.Growing it on a sloped bank in JimW.=E2=80=99s case might help to keep it dryer in thecold season and the necessity of hot summers as indicated by Tony might beanother important point.

I live in zone 7 (near Hannover, Lower Saxony, Germany) andplanted some small offsets outside last autumn and will see what comes out ofit this spring, but having a cold winter with frost down to =E2=80=9315 =C2=B0C (5 =C2=B0F) I donot expect too much.
Susan=E2=80=99s comments about growing it in a cold greenhouse, seemto show that those conditions are not suitable to bring Helicodiceros to bloomin cold wintergarten.

However, it might be possible.
Youmight have a look at this site:
http://culturesheet.org/araceae:helicodiceros:muscivorus
From the pictures it looks like a cold wintergarten and Ihope that I can give my plants similar conditions.

This season I used deep pots and a rich organic basedpotting mix as recommended by the culturesheet description and the plants neverlooked so good before (see picture).

Frommy initial request there is one point still in question:

Does Helicodiceros need the colder temperatures for theswitch from vegetative to generative growth, in other words, is there a coldrequirement for the induction of=C2=A0 an inflorescence?

Stillcurious, and thanks again to all of you who replied,
Bernhard.
From: aroid-l-bounces@gizmoworks.com[mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of StroWi@t-online.de
Sent: Wednesday, January 27, 2010 1:29 AM
To: aroid-L
Subject: [Aroid-l] Temperature requierements for Helicodiceros

Aroiders,

from the temperatures and seasonal rainfallon Sardinia I guess that Helocodiceros grows from late Sebtember to April orMay with the maximum of rainfall in November and December and temperatures downto 8 =C5=93C (46 =C5=93F) in December to February.

I would like to know, wether the lowtemperatures in the growing season are neccessary or if Helicodiceros could begrown (and flower) at higher temperatures as well.

Looking forward to any comment,
Bernhard.
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