User blog comment:Zombieman1350/Combine Your Plants/@comment-3977620-20110801204641

There's a video on YouTube (not published by Pop Cap, however) showing possible new plants and zombies if PVZ2 were to ever come out. It's basically a slideshow with music, and one of the plants I remember seeing was called Nail-nuts. It looks like a Tall-nut with darker color and small spikes coming out of it. I think the whole idea behind it was a combination of the Tall-nut and the Spikeweed, which damages zombies that tries to eat it.