hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: Amorphophallus titanum leaf height inquiry

  • Subject: Re: Amorphophallus titanum leaf height inquiry
  • From: "Weaver, Bill" <bill.weaver@hp.com>
  • Date: Tue, 24 Jun 2008 04:23:05 +0000

I'd say you got lucky this time. My experience has been that the leaf will smash itself up against the roof.
Unfortunately, in my greenhouse that means that any part in contact with the roof got burned.
I have tried to shorten the leaf by hanging a grow light just inches above the emerging leaf and raising it
as it grew. It didn't seem to make any difference.
I also tried tipping the pot over hoping that it would grow at an angle before opening. No luck there either.
The stem just bent itself at 90 degrees and kept on growing straight up.
Bill Weaver

From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Brian O'Brien
Sent: Sunday, June 22, 2008 8:59 PM
To: aroid-l@gizmoworks.com
Cc: bobrien@gac.edu
Subject: [Aroid-l] Amorphophallus titanum leaf height inquiry

Hi All,
   Our largest Titan appears to have reached maximum leaf height for its current growth cycle.  It's about 12 feet high, just below the greenhouse roof level.  My question for other growers of this plant is:  does the plant somehow detect the presence of a barrier, and stop vertical growth, or will it, the next time that it produces a leaf, try to push the leaf through the greenhouse roof?  We were concerned about the latter possibility this time, and it seems oddly coincidental that the leaf stopped growing vertically just at the point when we hoped that it would do so.
   Here's a link for the latest update, including some photos of the leaf scaled to humans:  http://arboretum.blog.gustavus.edu/2008/06/19/gigantic-leaf-garners-gawkers/


Brian A. O'Brien, Department of Chemistry, Gustavus Adolphus College
800 West College Avenue, Saint Peter, Minnesota  56082  U.S.A.
e-mail bobrien@gustavus.edu or bobrien@gac.edu 
tel. (507)933-7310     fax (507)933-7041   http://www.gustavus.edu/~bobrien

Hope and the future for me are not in lawns and cultivated fields,
not in towns and cities, but in the impervious and quaking swamps.

Henry David Thoreau

Aroid-L mailing list

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement