Q.Why My Cala Lilly Flowers Faded Over The Years Now Pastel Lilac Used To Be Deep Purple>
Plant was purchased 10 years ago and divided twice..still beautiful and full but flowers faded to pastel 6 years ago
Certified GKH Gardening Expert
I'm giving you links to some articles. One piece is about fading flowers, and one article will give you tips on your growing conditions, which you may want to check on. The third will tell you how to fertilize your callas.
https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/feeding-calla-lily-plants.htm
https://www.gardeningknowhow.com/plant-problems/environmental/fixing-color-faded-flowers.htm
https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/growing-calla-lilies-and-care-of-calla-lilies.htm