No, totally different from diapers, I think. I spent more time on the web site. Their stuff is starch and diapers are petroleum. Here's from their FAQ:

Q. Iā??ve tried superabsorbents before, but couldnā??t really tell a difference in my plants.

A. Zeba is totally new, and totally different from other products. Youā??ve likely had experience with the many polyacrylamide formulations (PAMs) sold on the market. PAMs are supersabsorbents made with petroleum-type PAM formulations, the active ingredient used in disposable diapers. PAMs hold water tightly ā?? a good thing for diapers, but a bad thing when your plant fights it for a drink, which explains why these formulations are less effective in growing plants.
melledout Reviewed by melledout on . Anyone checked out Zeba? I've got friends in Oregon who are jumping over this new ag and flower growing product. www.zeba.com They're getting much faster germination, much larger plant size with less water. They say it's built on lots of USDA research then more years in private development. They know someone at the company and it's about to be labeled Organic, although it's already totally biodegradable. The Zeba stuff seems to repeatedly get 25% or so higher yield in plants. But it's new on the market and I'm Rating: 5