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re:Re: [Aroid-l] Re: Culture information

  • Subject: re:Re: [Aroid-l] Re: Culture information
  • From: Gusman Guy ggusman@ulb.ac.be
  • Date: Sat, 24 Sep 2005 13:13:12 +0200 (MEST)

I am afraid there is some confusion as Arum jacquemontii Blume does exist. It is the only Himalayan species of Arum. See Pete's book on The Genus Arum, pp. 137-140. 
Nothing to do with Arisaema jacquemontii Blume.
Unfortunately, I cannot help you find a commercial source as I don't know where it could be found in cultivation.
Best wishes.
Guy Gusman

>--- "C. J. Addington" <cjaddington@earthlink.net>
>> Hi Kyle and Everyone!    The genus Arum is my
>personal favorite genus, and my rather time-consuming
>hobby, so I thought I would throw in my two cents on
>growing them (which may be about all it's worth!).  Of
>the 26 or so "good" species, I am currently growing 23
>of them. (I can't quite get hold of A. hainesii, A.
>idaeum or A. jacquemontii, so if anyone has them, or
>knows where to get them, I'd love to talk to you!)
><<<<<<Hello C.J., th'x for your post!!!>>>>>>
>  Overall, Arums are classic Mediterranean 
>summer-dormant plants. They start pushing out roots in
>late summer/early fall (in other words, right now),
>grow lushly all winter, bloom in the spring, and go
>totally dormant in the heat of summer. 
><<<I just noticed yesterday almost all have shoots
>pushing up through the surface of the soil, so now I
>can mark them accordingly summer dormant!!!>>>>>>
>They like good drainage, and gritty, alkaline soil. If
>your soil or water are acidic ( pH less than 7.0 )
>they will really benefit from a liberal application of
>ground limestone or dolomite. Most hate soggy
>conditions (the exception being A. hygrophilum ), and
>most prefer some fairly strong sunlight in the winter
>for best blooming. A. italicum and A. maculatum will
>take deeper shade, but A. dioscoridis, sintenisii and
>orientale really want to be out in the sun.
><<<<They are in Clay pot's maybe 4" size as I didn't
>know of their size this year (Forgot to mention Tubers
>are size of marbles)In a locally made organic Compost
>Potting soil made with Lobster Shells and Fish
>remnants..plus alot of extra perlite(I have around 40
>Sansevierias.. so I've learned about drainage)...plus
>there's a bit of eggshell thrown in from the kitchen.
>I don't have ground limestone on hand but do have
>Limestone grit and perhaps topdressing the pots would
>help or incorporating it into the soil?  As far as
>watering its once weekly whether they need it or not
>and they'll be grown inside of my 8 x 12' glassed in
>porch with the best south-easterly exposure as I'm
>literally 30' from the edge of the water and the only
>oak tree in between of course is deciduous....>>>>>>>
>     All species will really respond well to heavy
> feeding, especially with something rich in
>phosphorus, like bone meal.  During the summer, most
>need to go pretty much totally dry to avoid rotting,
>and the dormant tubers can in fact be stored naked and
>un-potted like potatoes.
><<<For this year I'm trusting that the Compost/Potting
>soil and the Dyna - Gro shall keep them going well,
>I've access to Osmocote as well a 8-9 month though I
>can't remember the formulation...Running dry is not a
>problem as most of the plants go outside and that'll
>be one thing less to have to worry about!!!>>>>>>>
>    In Maine, I would predict that many of these will
>have to be strictly indoor plants. They are
>winter-growers, but in a mild Mediterranean climate
>where it rarely drops below freezing. I am fortunate
>that I am growing my little guys here in the
>Sacramento Valley of California ( zone 9 ), since it
>hardly ever freezes here, and our summers are long,
>bone dry and brutally hot, which they love.
><<<<<Yes they being new, shall stay inside this year
>and now that their dormancy cycle is known...kept
>indoors for their life as we're about to get our first
>frost any day now night temps are around 40-50 and the
>cool growing orchids are starting to spike I've
>noticed so I shan't be puttting them in jeopardy
>anytime soon!!>>>>>>>
>     Overall, the closer you can mimic a long dry
>summer and a mild wet winter, the bigger and better (
>and stinkier! ) your Arums will be. Hope that helps,
>and if others are growing these beauties, I'd love to
>hear what you are doing with them, and how they are
>> Cheers,
>> C.J. Addington
>> Citrus Heights, California
><<<C.J....Th'x again you've been a wealth of
>information, perhaps once I get a camera working again
>and these beauties rise up and show their faces, I'll
>endeavor to post pics...
>Kyle Fletcher-Baker, MCN
>Yarmouth Maine zone 5
>Yahoo! Mail - PC Magazine Editors' Choice 2005 
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