How can I get my flower to change color

Question

I have a Serrada calla lily. It has been blooming well, yet the flower should be yellow but remains green and is not opening at all. Plant is healthy otherwise. It is in a container and receives morning sun, afternoon shade.

Answer 1

Calla lilies' flowers normally start out green and will gain color as the flower ages. This is normal. As for the buds not opening fully, they likely need more water. Increase your watering. They should be watered at least daily and twice a day if the temps are over 80 F, especially if they're in containers. You can also add some phosphorus, such as bone meal, to the soil.