Narcissa answered her question. "The silver rose blooms once a year and lasts for the entire year. It only blooms one flower at a time, if picked, you have to wait another six months for a new one to appear." They all looked at the singular rose bud. "It's also sometimes used in potion making for a replacement to unicorn blood. Eating its petals is said to have the same effects as drinking an entire unicorn dry."