D'yall remember one scene in Philosopher's Stone, where Snape asked Harry, "Potter! What would I get if I added powdered root of asphodel to an infusion of wormwood?" If my book on old Victorian Flower Language is correct, asphodel is a type of Lily that means, "My regrets follow you to the grave" and wormwood means "absence" which also represents "bitter sorrow" a lot of the time. If you combine those things, you get this.... "I bitterly regret Lily's death." F L O W E R S