To unlock The Workshop Lot, you need to meet Burt and pay 100 Coins to reclaim the Lot. Upon reclaiming the land, you need to fight agains Zombie, Conehead Zombie and Barrel Zombie on the waste land. After winning the battle, you get Cherry Bomb as a new Plant.
Plants vs Zombies Adventures The Workshop Lot – All stats
All the stat of Plants vs Zombies Adventures The Workshop Lot including new Plant and new Zombies to unlock as well as how to unlock or reclaim the Lot are shown in the table below:
Plants vs Zombies Adventures The Workshop Lot stats
||The Workshop Lot
||Available after meeting Burt and paying 100 Coins
For a complete guide on PvZ Adventures Beta, go here.