Tier 3 plants are the strongest plants in Plants vs. Zombies: All Stars, when the tier 2 plants upgrade to +7, finish some tasks to awaken the plants to tier 3.
Pages in category "Tier 3 plants"
“ Pea Pod was a Tier 2 plant in Plants vs. Zombies: All Stars. It was removed in a later update...
Pea Pod (PvZ: AS)