Amorphophallus konjac

K. Koch ex Matsum. & Hayata 1906

In 2006-2008 my plants grew as usually, but I thought the mother tuber was growing too slowly.
In 2009 I made an experiment, I cultivated a part of the tubers in garden, a part on a balcony and a part at home.

2009 garden

I chose a few tubers 3-4 cm in diameter. They started to grow in the second week of June.
They received a lot of sunlight, water and fertilizer, but they didn't grow much.

2009 balcony

I took similar size tubers, planted them in a pot and they grew on my balcony.
They took off a week later than those in the garden and grew the poorest.
They were exposed to direct sunlight and the soil often got dry in the pot.

2009 home

I chose the 3 largest tubers to let them grow at home on the southern window.
They began to put leaves the earliest, the first photo was taken on 23rd May.
The tallest plant reached 56 cm of height, the petiole was 36 cm and the leaf span 46 cm.
The top view of the 3 largest leaves
A comparison - plants grown on the balcony and at home.
After the season the tuber got as an offset in 2001 was 6 cm in diameter. Didn't it take too long as for 8 years of cultivation?


In 2010 I took care only about the largest tuber. It began to grow on the first days of June and it also grew at home.
The leaf was 71 cm tall, 65 cm wide, on a petiole 40 cm, so it was much larger than a year ago (56/46/36).
After the season the tuber was 60x47 mm and weighed 78g, so it hasn't increased much its size since the previous year.

The IAS: A. konjac
Krzysztof Kozminski: A. konjac
Lester Kallus: A. konjac
Paul Resslar: A. konjac with a pink petiole, and with a dark petiole
Alan Galloway: Amorphophallus konjac
Tropicos: Amorphophallus konjac
CATE Araceae: Amorphophallus konjac
Konnyaku: Amorphophallus konjac
page created on 2011-03-16
last updated on 2011-03-16