Hoping someone may have some info on this yellow planter. I didn't have much luck with google. Impressed into the bottom is Exclusive Mr. Potts Design USA with a small TM(Trademark) next to Potts. Approximately 7" diameter x 4 1/2" tall. The top view pic is the truest to color. It seems to me that the divot before USA would be a good indicator as to who made this. I could have sworn I have seen that before.
One sold on Etsy--but has absolutely no available information to add to what you already know. https://www.pinterest.com/pin/184295809723835685/
There is a Haeger FB page that I'm a member of and was going to post it there but I searched the page first and the few post with Mr. Potts pieces asking for info had no response One post was from 2015 and the other 2019
Interesting that there's so little information available--I thought there'd be something on "Mr. Potts Design"--by a collector or even by Haeger. But nothing.
Don't know if this may have something to do with your planter or not. https://www.yelp.com/biz/mr-potts-paint-your-own-pottery-cleburne
Thank for looking into this. In the post in the Haeger group I mentioned, one item is marked exactly like mine except it also has Haeger on the bottom.