About three years ago I planted some purple iris bulbs my sister had given me from her yard. They started blooming for the first time last year a brilliant violet hue. They've already bloomed and wilted this year. However, a couple days ago I noticed one extremely tall plant with buds that had yet to bloom. To my surprise, the irises that appeared were yellow! I only planted violet... what a nice surprise! I was so happy I ran to grab my real camera as opposed to using my phone camera! Hurray!