I got some bulbs from homedepot that has already started growing stems I have no idea how to grow these things just read basics online I need at least one to grow a flower before Christmas because it is a gift the problem is most of the "flowers" or stems that look like they turn into flowers have dried up and died all except one. Should I cut the dying white ones off and leave the green ones? I used to grow some flowers in the past and I would cut the unhealthy