Please help. I purchased my home last March and it has well established White Cali Lilies that bloomed like crazy last year and are doing the same this year. They seem to require little care other than keeping the snails off them and I cut them down at the end of the season. I found Yellow, Purlple, Pink and various other ones at HomeDepot and Lowes so I purchased about 8 off them in various size containers (quart and gallon). Each one I have planted are very sickly after transplanting. The leaves first turn yellow and then the blooms start going bad. I was hoping not to just have white ones but a multitude of colors but they don't seem to do well. I have one purple one still in the original one gallon pot that in doing good and I am afraid to transplant it. I feel I have wasted a lot of money on these. Please help.

Mona, If the leaves appear healthy it's likely that the inflorescence (flower) has matured and is dying back. Can you see seeds inside the spathe (petal)? With many callas an older spathe will turn green on the outside (it is a modified leaf after all). By removing the spent flowers you'll be allowing the plant to devote more energy to leaf and corm growth. A picture would be helpful.

Now I am not sure about the spadix falling off, but as far as the spathe turning green, that is very common. The spathe in fact is a modified leaf so its not too far of a stretch for the plant to turn it green and become almost an actual leaf. All of my "callas" Zantedeschias do this. Sometimes you will get mutated inflorescences that are half green and half colored when they first bloom even.

Hmmm...so they are probably dead. I wonder why they all died, one at a time, throughout the winter? Next time I will let them go dormant in the fall and just winter store the bulbs. I haven't dug one up yet but will do that now. Here is a link that might be useful: My Country DIY Blog