My bulbo peltopus spikes keep blasting. The plant is growing well, so I know it's somewhat happy where it is. It throws out 3-7 spikes at a time, but they always blast once they get to about 1". They turn brown and dry up. I don't think it's insects as the whole spike browns at the same time (i.e. they aren't getting chomped in half at the base kind of thing). I suspect it might be that my winter water is pretty cold, but this is the only plant that seems to be having problems. Thoughts?