I have never tried putting greens in the blender. I like the naturalized daylilies. If you eat their tubers, go for the light coloured ones because they are the youngest. The flowers, fried in butter are good too. Bulrushes are supposed to have a potato-like root at the base of the stem - that's one I would like to try. It's another plant, like the daylilies, where you can eat every part of it.