Lowe's offers the Emsco 24" Resin Raised Garden Bed in Brown for $19.98. Plus, MyLowe's members get free shipping. (Not a member? It's free to join.) That's tied with our mention from a year ago and the lowest price we could find by $7. It measures 20x24" and features a self-contained watering system.
These plants may also do everything from reducing the amount of dust in your home to boosting your happiness.