Edwina likes "long and wavy." She has never eaten a house plant except the cat grass (also known as wheat grass) that I grow for her in the winter. When she is able to go in the yard she likes tall grass (i.e. prairie grass) a weed that unfortunately grows in my garden, spikes that go in the center of ornamental planters, and will, on occasion, settle for regular lawn grass.

She does love her cat grass and it grows to an edible length in about a week. I've tried growing cat nip for her in the garden but she finds fresh catnip a bit of a bore (likes it dried though.)

Many cats love fresh catnip and, like its cousin mint, it is weedlike in its ease and speed of growth. Might be an option for you.