Sproutling

Sproutling A.K.A. Experiment 509-A is the son of Sprout. He was the genetic experiment born from Sprout's. Like his father, it became a killer plant.

Stitch! anime
Although Sprout reappeared in the Japanese version and was mentioned by Jumba who still lives on Kauai, he instead has a son named Sproutling, codename: Experiment 509-A.