First, you have to clear those bushes in the back with the help of a broken Android!
One of your clients, Dooby Gang, will use their skills to turn that pile of rubbish in the backyard into a fully functional Android. When you see them at the door, tap on them and you'll see the option on the deal screen.
Once Dooby Gang has fixed her, keep an eye out for the Artificial Intelligent Being, at the door. When you tap on her at the door, you’ll see an option to “Pull Out” on the bottom left of the deal screen. Tap on that and she'll help you clear out that backyard!
Once you have one of the bushes cleared, you can start growing outdoor strains!