Id suspect that youl be susprised. Provided that the rott doesnt spread, one of the minor eye spots should take over and grow. I have sliced konjac tubers in half(just to try) and have had both halves grow into nice healthy plants.

Chris

Thanks Chris.

While we're on the subject, my Konjacs are just starting to show signs of activity. I understand they're sensitive to root rot, and realize that they can put out a good sized spike while out of the pot (impressive blooms in the post a bit back). My question is at what point is it safe to repot them and start watering them so they can start growing roots?

The rule I use is to wait until the bulb has noticeable rootnubs coming out of the base of the shoot ... Flower stalks wont have rootnubs and a big shoot that doesnt appear to be developing nubs is one you should probly hold off with and wait to see if it blooms..

If the nubs are there.. it wants to grow

Chris

Chris is right! I have a 16 pounder and it has no root nubs. It well be flowering with in the next few months or so as the shoot is about 3" tall tight now. I NEVER store my A. Konjac's in ANYTHING. I dig them up, let them dry. rub off the dried dirt and dry root pieces that were still left on, and store them on open shelf's in my basement where it stays about 50- 54 degrees. Small bulblets I clean in the same way, and store in an open shallow box. This year I only have three blooming, but that's OK as My family doesn't get as excited about their blooms as I DO!
ALSO, I have had a bulb try to rot. All I did was clean odd the soft area back to fresh solid white bulb, and leave it on my counter to dry or scab over. Put it back in the basement after about 4 - 5 days and plant as I would all the others! you may get more than one sprout. I always cut multi shoots back to the biggest nicest one so I only get one bulb. Multiple shoots means multiple bulbs. If that's what you want let them all grow! I have enough small babies every year that I don't let large bulbs divide!
HAVE FUN
David
AKA
KonjacKing

Thanks for the practical advice! I don't think I'm completely following David's comments about what he cuts and what he grows (my first time with Konjac, and I never dug up my Paeonii). You're saying the main bulb, as it gets ready to grow, will set out minor shoots in addition to the main one? I think I see - when the leaf is formed, all the bulb energy goes into the leaf and the old bulb shrivels; if there are two leaves, the bulb energy is divided between the two. Am I close? Since you say you still get the babies, I'm guessing they don't develop from the shoots you cut. I'm looking forward to seeing mine grow.

For Paeoniifolium, I think I've usually seen people say they leave them in the ground. I dug mine up to save it from drowning (overwatering by daughter just as it was going into dormancy, and I've lost a main bulb to rootrot before), and am keeping it in a partly-closed ziplock to slow down the drying while I let the soil dry out some. It looks happy enough for the present. Any advice on how long I can keep it out or whether it can be treated like Konjac?

The tuber I have has just been sitting on the shelf in the kitchen, not in a cabinet or anything, just in the open. It's fine. Didn't put it in peat or anything. I think these bulbs thrive on absolute and total neglect.

Susan

Yes you are right!
If you let two or three etc. leafs form... the old bulb shrivles up and you will get that number of new bulbs.even if you only get one new leaf, the old bulb shrivles up and a new one developes. Each bulb will have its own new babie bulbs atached by main thick root-like short stems. I only let the main leaf stem grow, cutting off any other smaller ones that try . NOT ALL bulbs will do this. Mostly when they get large and older.
David

If you are at all worried about rot spreading on your Amorph bulbs, just use old hormone rooting powder. Even if the powder is out of date, the funghicide in it stays active, and it's perfect for spreading on a freshly cut surface. We treat all our Amorph corms that develope any rot this way and we very rarely see the rot spread...

Someone could give me some Konjac bulb?i'm very appreciate !
thanks !