Yes, there is a difference between lilies and daylilies. They are of different genera and have different characteristics. Lilies, for example, grow from bulbs, while daylilies grow from roots. Lily flowers always have six petals (and the flowers last two to three weeks).Click to see full answer. Similarly, are tiger lilies the same as daylilies?Daylilies (Hemerocallis spp.) and tiger lily (Lilium lancifolium, also Lilium tigrinum) have colorful, showy flowers and belong to the lily family. Tiger lily is a single species thought native to eastern Asia, while daylilies contain a number of species, also native to Asia, that have many cultivars and hybrids.Also, do daylilies have bulbs? Daylily roots – not bulbs As all good gardeners know, daylilies don’t grow from bulbs like true lilies and other famous bulb flowers like daffodils and tulips. These unique root systems hold so much moisture and nutrients, the plants can survive out of the ground for weeks, as our wagon train ancestors learned. Accordingly, are Asiatic lilies the same as daylilies? A member of the plant family Liliaceae (Lily), Asiatic lilies are native to Japan and China. Daylilies are not true lilies, although they are also native to Asia, belonging to the genus Hemerocallis.Will daylilies spread?Daylilies quickly spread into larger clumps, and eventually they become so crowded that they do not bloom as well. You may want to divide your daylilies every few years, particularly if you notice fewer blooms. Plant the divided pieces in soil amended with compost, just as you would plant a potted daylily.