Talk:Plant upgrade system/@comment-27895465-20170306075730

I need help how wil my plants reach Max Level? Example,the Peashooter is already at Level 5,but it stops there and cannot be upgraded anymore it only says Extra Seed Packets,but when I played the epic quest,I saw that his Peashooter is Level 20!How can I upgrade more?I currently have 300+ seed packets