Arundo donax 39variegata39 is a half45hardy perennial grass with variegated green foliage and wide pale margins the giant reed39s exotic upright stems stretch to an impressive 18m 40539113441 when fully grown making it a dramatic addition to patio containers well45watered pot plants and the backs of sunny borders planting arundo donax var versicolor outdoors will entail a little extra maintenance for the plant should be transferred to a warmer frost45free