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Re: Duration to first dormancy in Amorph. titanum

  • To: Multiple recipients of list AROID-L <aroid-l@mobot.org>
  • Subject: Re: Duration to first dormancy in Amorph. titanum
  • From: StroWi@t-online.de (StroWi)
  • Date: Tue, 8 Jan 2002 09:09:15 -0600 (CST)

Dear Clark,

thanks for the information!

I grow my titanum also under home conditions on a window shelf in winter and in 
a "wintergarten" with much better light conditions in summer.
So I guess that my plant will have to grow for another year before going 

Do you remember, how high the last leaf was before your plant went dormant?

You mentioned also that you try to break dormancy in spring. How do you try to 
break dormancy? Just by watering and higher temperatures or do you know 
something else?

Thanks again and good growing!

Dollbergen, Germany
aprox. zone 6/7

Clark Riley schrieb:
> Under condition much poorer than David's, my seedlings of titanum 
> entered dormancy about 2 years after germination, with tubers about 2 
> inches, 5 cm. Dormancy under my home conditions lasts 2 -  6 months, 
> though I try to time dormancy breaking to very early Spring in order 
> to take advantage of the height-shortening effects of the Summer sun. 
> Each cycle has resulted in a 6 - 10 fold increase in the mass of the 
> tuber. As a house plant, I have found it big but adaptable.
> Clark Riley
> Baltimore, Maryland, USA
> USDA Zone 6.5
> >Aroiders,
> >
> >how long does it (normally) take to go into it's first dormancy for an
>  Amorph.
> >titanum seedling?
> >Or in other words, how big is the tuber normally at that time or how 
> >many leafs
> >has the plant made till then?
> >
> >I grow an Amorph. titanum, just making it's 3rd leaf (about 20 cm 
> >high (approx.
> >8 inch) and about 9 mm (approx. 1/3 of an inch) in diameter at the base of
>  the
> >petiole) and wonder how long it will grow on and on making one leaf after
> >anonther before going to sleep.
> >
> >Any suggestion or experience wellcome.
> >
> >Thanks,
> >Bernhard.
> Clark T. Riley
> drriley@mypcr.com
> http://drriley.mypcr.com/
> Production Services by Clark Riley
> Full Service  . . .  Pen to Page since 1990

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