I have lots and lots of amarillas in my yard. They flower beautifully. I never dig up the bulb. They just multiply. However, some of them haves that turn mostly yellow during the summer. Others continue to grow really full and green. What causes this?
By the way, I plant the see lack seeds when the pods opens. That's why I have so many of them. They usually bloom after a year's growth. I collect seeds from other yards with different colors and plant them. Makes for a variety. Also beats buying the bulbs....very expensive.