Lilo & Stitch: The Series - Season 1 - Eps 16: Sprout
Lilo finds the pod for Experiment #509, which is a plant experiment. Lilo wants to activate to find it's true place, but Jumba won't let her and locks it up. However, when she makes a bet with Mertle, she breaks the lock and activates #509 and dubs it Sprout. But things get out of control at the Kauai Town Fair, and Stitch has a showdown with a cowboy.
About Lilo & Stitch: The Series

Title: Lilo & Stitch: The Series
First Air Date: 2003-09-20
Last Air Date: 2006-07-29
Status: Ended
Rating: 7.38/10 (from 576 votes)
Language: EN
Seasons: 2
Total Episodes: 67
Network: ABC Disney Channel
Genres: Animation, Family, Comedy, Action & Adventure, Sci-Fi & Fantasy, Kids
Production Companies: Disney Television Animation
Synopsis
This animated series chronicles the further adventures of renegade scientist Dr. Jumba Jookiba's beloved Experiment 626, who is now living happily as Lilo's alien buddy Stitch. Jumba’s remaining experiments have landed all over Hawaii in the form of dehydrated pods. Lilo and Stitch’s mission is to catch Stitch’s "cousins" before they fall into the clutches of the evil Dr. Jacques von Hamsterviel!
Cast

Daveigh Chase
Lilo Pelekai (voice)

Chris Sanders
Stitch (voice)

David Ogden Stiers
Dr. Jumba Jookiba (voice)

Kevin McDonald
Pleakley (voice)

Tia Carrere
Nani Pelekai (voice)

Kevin Michael Richardson
Captain Gantu (voice)