Ugggh - that blade - what is that you carry? Disease and rot surround you, Death Knight!
There's a rather large pile of feces right behind her at all times. However, right behind the pile of feces stands a pot of flowers. The three makes a perfectly aligned row of, dryad > feces > flowers.
This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
The above-mentioned row of "dryad > feces > flowers", might be a vague reference to how dryad's feces grow into flora.