English plurals. English nouns are inflected for grammatical number, meaning that if they are of the countable type, they generally have different forms for singular and plural.
Growing Daylilies. We'd describe the Daylily as the backbone of the perennial garden except that would do a disservice to this most durable plant -- backbones, as every gardener knows, are fragile things, whereas Daylilies are close to indestructible.
Canna lilies (Canna generalis), which grow in U.S. Department of Agriculture plant hardiness zones 8 through 11, have broad leaves, which may be green, brown, bronze or maroon, and large red, orange, or yellow flowers. Canna lilies have few pest problems, but a handful of pests like to feed on the foliage and flowers.