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.
New lily cultivars are produced from seeds. There are some 110 species of lilies in the genius Lilium. They are ordinarily grown from bulbs sold in nurseries and garden supply centers and typically propagated by dividing young plants growing from bulbs.