Porcupine Grass (Miscanthus sinensis 'Strictus') is a statement piece with its spikey, upright habit and banded green and gold leaves. Reddish-bronze flowers top off this large perennial at up to 9' tall during late summer and fall. Porcupine Grass, Miscanthus sinensis 'Strictus' doesn't ask for much but a lot of sun. Place in the fence corner, or mixed border for a bold presentation of color and architectural interest in your landscape throughout the year.