User blog comment:Chickenwrangler369/Clash of plants (and zombies): Buildings/@comment-11469501-20140830144611

I got an idea for walls!

Lvl 1: infi-nut (but doesn't regen)

Lvl 2: wall-nut

Lvl 3: pumpkin

Lvl 4: pumpkin infi-nut

Lvl 5: tall-nut

Lvl 6: pumpkin wall-nut

Lvl 7: pumpkin tall-nut

Lvl 8: plant food wall-nut

Lvl 9: plant food pumpkin (same as wall-nut)

Lvl 10: plant food wall-nut in a pumpkin

Lvl 11: plant food tall-nut

Lvl 12: plant food tall-nut in a pumpkin

Lvl 13: plant food wall-nut in a plant-food pumpkin