How do you get plants in plants vs zombies?
Simple! You just have to keep playing adventure mode and you
will collect more plants every time. If you want to evolve your
plant go to Crazy Dave's shop there will be a few evolutions for
your plants. If you want to go to Crazy Dave's shop you have to
find his car key in adventure mode. Just keep killing zombies then
one of the zombies will drop Crazy Dave's car key. Hope this
helped.