Pampas grass Cortaderia 'Rosea' White-Pink - Hardy plantPink plumes that sway in the wind. Pampas grass 'Rosea' (Cortaderia) adds a new dimension to your garden that you'll never get tired of. The 'Rosea' can grow up to 150 cm tall and is hardy. The plumes appear between August and October. Place it in a spot in the sun or partial shade. The young plants may still be delicate so make sure to protect them against frost. Once the winter is over you can snip off the flower stems and remove the dead leaves.