Amorphophallus Cultivation FAQ
Second set of Questions (2-5) with trial answers. Comments are in brackets
Q.Where can I buy tubers?
A. Below are companies that regularly sell 3 or more Amorphophallus species
[I'd really like to not list every company that sells only A. konjac, for
Plant Delights Nursery http://www.plantdel.com/
Cook's Carnivorous Plants http://www.flytraps.com
J.D. Andersen Nursery http://www.jdandersen.com/index.htm
Malesiana Tropicals http://www.malesiana.tropicals.com.my/index.html
Bjorn Malkmus' www.rareplants.de http://www.rareplants.de
[ + others??? ]
Amorphophallus tubers can often be found on the Aroid Trading Post
http://www.aroid.org/trading/index.html Occasionally people will give away
their surplus tubers or offsets.
They can sometimes be found on Ebay. The prices are sometimes below "market
value", sometimes not. It is best to buy plants while they are dormant.
Q. How hardy are Amorphophallus species?
A. A list of hardiness for several species (as well as other aroids), was
compiled by Plant Delights Nursery:
http://www.aroid.org/horticulture/hardy.html The estimates are for tubers
planted in the ground.
Q. How big do they need to be to bloom?
A. Even when mature, most Amorphophallus species will not bloom every year.
Moreover, whether a tuber will bloom at a given size is very unpredictable,
even for a clone of the same species. Below are estimates for what a
"typical" size at first bloom might be for several of the most common
species. Some plants may bloom while smaller than this, many will not bloom
[What I am seeking here is a guess as to an approximate median size at first
bloom. Say you have 100 tubers, average this over different conditions,
clones, luck, etc...]
A. konjac (6 in/15 cm)
A. paeoniifolius (at least 8 in/20 cm ???)
A. bulbifer (4 in./10 cm)
Q. Are the plants poisonous?
A. Most parts of the plant contain calcium oxalate, which is poisonous.
Even contact with a tuber can cause a skin rash in sensitive people. [Are
the berries ever poisonous?? Kids are known to eat berries...]