This seems like Back to the Future technology applied to weed, which is to say it's amazing. Unfortunately it's also very expensive. A Leaf unit will cost you $1,500, and won't ship until Summer 2016.

For example, Leaf makes no bones about the fact that its “plug ‘n’ plant” system is specifically meant for cannabis. It’s like a smart garden designed for weed. Recommended Videos ...

Dear Roger: I can't identify the enclosed weed. Weed killers don't work. The plants may die out. But they come back the next winter. Please tell me what this weed is and how to kill it for good. I ...