I have just noticed to my great sadness that all three flower spikes on my Cristata died out and died, even though water was sufficiently supplied. Could it be that it’s a light issue? It’s sitting on a NNW facing window with temps are pins 15-18 degrees Celsius.
Light might be a factor if it's so intense that it burns them, but I doubt that's an issue this time of year in Berlin.
In my experience, there are three things that most commonly result in spike loss: extremely low humidity, pests, or ethylene in the environment due to ripening fruit or a out-of-tune gas flame.
Hm, none of these ally at all. The flower spikes were doing totally fine and then at one point just ceased growing and now I realized they just dried up and died.