These same predators, which cannot move as fast as ants, easily devour immobile scale or slow-moving aphids. These barriers are best applied in late winter, before active foliar growth, or better yet, immediately after properly scheduled application of oil or soap. However, canna is known only as Canna spp. This species was once very popular and is currently making a comeback. The flowers, which appear in summer or autumn, range in color from red, dark red, coral, orange, pink, white, light yellow and bright yellow.
Cannas require full sun and good drainage.
Contact horticulturist Tony Tomeo at 358-2574.