Ornamental rhubarb. Among the most statuesque and handsome foliage plants for creating a grand, lush atmosphere, even if space is limited. Preferring good retentive soils, shelter from strong winds, in light shade or some sun (but not scorching). At their best in spring, where the foliage, often crimson-purple tinted is at its most intense. Around 50 species, mainly in Asia. The edible rhubarb, long cultivated, is a complex hybrid.