Main spike withers on Dtps Jungo City

Dtps. Jungo City

     All the buds blasted on my Dtps. Jungo City, and the top of the spike is dying off.  It's not drying, but rather it turned soft and limp.  Not all hope is lost for this bloom cycle, however.  A node lower down the spike has activated and is growing a side spike.  

Side spike

     Hopefully if the cold is what blasted the last set of spikes, then the season will be more amenable by the time this one is ready to bloom.

Buds blast on Dtps. Jungo City

Dtps. Jungo City

     My Dtps. Jungo City has me worried.  While the lowest of the buds is shiny and green and growing well, the next three buds on the spike look like they will blast. As you can see in the picture below, the buds are wrinkly on the outside, and a very different color from the lowest bud.  The yellowing of the stem on the second lowest bud isn't promising, either.

Blasting flower buds

     At least the lowest bud seems to be growing ok, but it would be a shame if I only get one flower out of this blooming.  I'm not sure what caused this problem. Perhaps it was either the recent cold coming in through the open windows, or the subsequent drop in humidity when we finally did close the windows and turn the heat on.  All the other spiking phals seem to be ok for now.

Edit (2/8/13): The lower bud is now blasting as well.