Even though the original group of Chia Pets were released in 1982/1983, there weren't any more for 10 years. In 1993, the Chia Turtle made its appearance.
From 2000 to 2001, you could get them with Watch Me Grow cards. I was really sorry to find out that the Chia Turtle was discontinued in 2009. Too bad, too, because it was really cute.
Where to Find It
So it's a little harder to find the Chia Turtle now, but sometimes you can find them here. (If nothing shows up, check back every once in awhile because you never know.)