Tropicals & Tender Perennials: What is this, 1 by lakesidecallas

lakesidecallas wrote:
I've always thought the new bulb is formed on top of the old bulb. It sucks all the nutrients out of the old bulb and the old bulb usually shrivels down to nothing, just a little lump on the bottom of the new bulb, and the little lump usually falls off after a while.
There is a dishonest seller on eBay that tries to convince you he is selling you a twin bulb. He's also selling Typhonium (Sauromatum) venosum as Amorphophallus konjac or bulbifer. You can tell because venosum has a really green colored bulb that is wrinkly and brownish along the sides but pretty smooth and green on the top, often has little babies attached along the top.

Here's a sad photo.
This is a konjac that I dug up in the fall. Under the pile of roots is the new bulb. The bulb attached on the bottom is the bulb from last year. So, you can see the plant didn't grow big enough to absorb the bulb from the year before.