Board Thread:Plants vs. Zombies: Garden Warfare/@comment-6915501-20140302141606/@comment-24626568-20140307232132

To be a little more specific, Plant Upgrades (Weapon upgrades) are randomly given through the sticker packs in the sticker shop. If you're specifically wanting plant upgrades or anything plant, I suggest the 20,000 coin pack that is specific for plants. After getting several of these I have now unlocked all my open plant characters upgrades. Slowly getting sticker pieces to pretty much every available plant.