When do your Amorphophallus wake up? I have one A konjac and I store the corm and soil in a terracotta pot. I put a lid on the top to keep the light out. I just right the corm and start watering at the end of winter, but I would like to encourage blooming. Any advice for us?
With all the species I have, there's no such thing as a "when they wake up" period. There's always something in the middle of its growing season (like the variabilis that have all just started to grow), or species like the titanums that are entirely aseasonal and may wake up or go dormant whenever they please, for however long they please (and my biggest is about to break its current confines, so it needs an upgrade, badly). You don't want to try forcing them to wake up when they're not ready, otherwise they will rot, so don't water konjac until you see it starting to grow (if you keep it potted, that means until you see something actually sticking up out of the soil). If you want flowers, give them a lot of light, and feed them A LOT. The bigger the tuber gets, the better chance it will decide to bloom, there are no other real triggers.
Thanks. That makes perfect sense, that you can't force them awake with water if they have no mechanism/desire to draw it from the soil. You mentioned feeding "a lot". What type of feeding has worked for you?
I'm still working out effective feeding methods, but mixing the soils with a heavy load of slow-release fertilizers and once-weekly or semi-weekly feedings of a moderate-strength high-nitrogen liquid fertilizer (especially as leaves are developing) is what I see recommended often; when bulbs are approaching a mature size regular applications of bone meal or other high-phosphorus sources should help encourage blooming.