Thanks everyone! I wasn't expecting this article to show up in perennial week, but since it has, I will take more photos of the Petchoas in my garden. I have put them in all the window boxes on the house and in a big pot in my container garden near my greenhouse. If it's not raining later, I will take more photos.
You may have better luck finding it sold as a hanging basket and not as individual potted plants. You may also find that you may have to educate the garden centre staff since they may be unaware of what the Pechoas are. If the baskets do not have a variety tag, a great way to tell it is a petchoa is strong color blooms, big petunia size blooms, foliage is non-sticky and small leaf. Flowers are the size of multiflora petunias and plant foliage looks more like calibrachoa.
These photos are from 2010. The Petchoa is darker pink to the right of the Vista Bubblegum petunia pot