Canna 'Robert Kemp' (c. compacta) is one of the most well-known varieties of canna in the United States. Often called the 'hummingbird canna,' this species variety delivers masses of smaller, compact, bright red flowers that hummingbirds and other pollinators simply adore. Although more simplistic, it is absolutely stunning when planted alone or in multiples. Lush, bright-green leaves are slightly pointed and provide a great backdrop for its vibrant flowers. Medium in height, it will reach about 6ft overall.