Marge Simpson is quite a character and her bee-hive of a up-do is so iconic.
Bart, the trouble-making, attention seeking 4th grader, closely resembles the yellow lily-flowered tulip along with his sister, Lisa, the over-achieving, saxophone playing honor student.
There have been many references to plants, flowers, and gardens in this show. I can think of one episode which started out with everyone in Springfield (the fictional town where the family lives) at a local botanical garden witnessing the opening of a rare flower (the animated equivalent of Amorphophallus titanum, the giant corpse flower)
Then there's Homer Simpson who attempts to recreate the company of his wife after he's banished from the house and forced to stay in his son's treehouse for his wrong-doing.
Little Maggie is adorable, but also quite inquisitive and sometimes mischievous. Accused of shooting Mr. Burns, the town's greedy and wealthy owner of the nuclear power plant, she also has a sweet side to her depicted by this artist rendition of her:
Moe, the bartender, appears in a hallucination of Homer's and is embedded in a field of daisies!
Then there's the quirky, overly conservative neighbor, Ned Flanders who doesn't have much luck with houseplants: