What's your question? Ask

Calla lilies' flowers normally start out green and will gain color as the flower ages. This is normal. If you have not read it, this article will help as well: https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/make-calla-lily-bloom.htm

After some calla lilies bloom, they will immediately begin to go dormant for a couple of months. The rhizome goes dormant for about 90 days to restore itself and then the plant emerges once again to bloom and grow.

These articles may be helpful: https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/growing-calla-lilies-and-care-of-calla-lilies.htm
http://www.gardeningknowhow.com/flower/calla-lily-winter-care.htm
http://www.gardeningknowhow.com/flower/make-calla-lily-bloom.htm

I'd stick with a commercial fertilizer, either chemical or organic. It's cheaper in the long run.

Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/make-calla-lily-bloom.htm

Try hi-yield bulb food (Hi-Yield American Dutch Bulb Food) which has a 7-8-5 (n-p-k) ratio or bone meal (0-10-0).

These articles should help provide some useful information:

https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/growing-calla-lilies-and-care-of-calla-lilies.htm

https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/make-calla-lily-bloom.htm

They are such lovely flowers, I wish you luck ^-^

As the pods mature, their weight will naturally bend the stem to the ground. Eventually, they will begin to turn yellow and become mushy. While they appear to rot, rest assured this is all part of the natural process. Seed pods are ripe once they turn yellowish and go soft. At this point, you can harvest the pods. Remove the pod from the plant and break it open. Then, take the seeds from the pulp using a plate or collander to catch them and rinsing under water. Dry the seeds and store them in a dry, cool place or plant right away.