Answer: Day lilies are members of the genus Hemerocallis. They grow from crowns (not bulbs) with many long, narrow leaves that originate from the crown. The flowers grow on long stems that also grow from the crown. Garden lilies, on the other hand, are members of the genus Lilium that grow from bulbs. The leaves are short and narrow and grow along a long stem on top which sits the flowers. Both are related in that their flower parts come in sets of three or six and their leaves are straplike. They are members of the family Liliaceae. Garden plants propagate themselves in different ways depending on the plants. Some set seeds such as foxgloves, others have underground roots that sprout new plants such as bee balm and some have above ground stems thatroot easily to form new plants such as ground ivy. It all depends on the plant you have!
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