I have several calla lily plants. My problems is the leaves on the lilies are so large you can't see the blossom. How do I encourage the blossoms to grow longer so they can be appreciated?
The plants may need to be divided. Crowded plants will struggle with blooming.
Also a boost of Phosphorous can help with blossoming. Bone Meal is a good way to do this.
Here are some links for you.