In 1990, Twin Peaks gave the world a nightmare vision into the seediness beneath the placid veneer of small-town America.
mid-15c., "fruitful, abundant," from seed (n.) + -y (2). From 1570s as "abounding in seeds." Meaning "shabby" is from 1739, probably in reference to the appearance of a flowering plant that has run to seed. Related: Seediness.