The clumping grass Miscanthus zebrinus has beautiful horizontal stripes - lemon on green. It's a big but well behaved customer, and the winter silvery seedheads are fine and intricate.
Miscanthus Zebrinus - Zebra Grass
Plain Green New Growth
My gardening friend Astrid watches her Miscanthus Zebrinus more closely than I do mine. She thinks that its new growth is plain green. Then just as she starts to make plans for its removal the wide lemon stripes appear.
Miscanthus Seed Heads
I grow two clumps of Miscanthus zebrinus, or Zebra grass, in my garden, and they both give winter joy with their slivery seed-head silhouettes. Neither has overgrown its allocated space yet, but these are definitely big grasses. And occasionally the wind and rain will knock them into an ungainly sideways spread.