Setting up a new garden

Setting up a new garden

We just bought our first house and I'm excited to start working on our back yard setting up a play area plus garden. My in laws came over and helped us prettify our front yard and discovered that no one has ever worked with the soil since the house was built in '96 so it's a combination of soil and drywall and all the crap that they used to build the houses that they mixed up and spread out. Obviously I don't want my plants growing in this stuff so I was wondering what my options are for planting in my back yard that doesn't involve digging up everything and buying a ton of top soil which I can't afford! I've heard about raised beds but I know nothing about them and I'd be worried that the roots of the plants might still go down into the NastySoil. What are my options?
plant id please

plant id please

What do I have here?

What do I have here?

Bug ID

Bug ID

Our Little Apartment

Our Little Apartment

hi!! I haven’t been around in a while…

hi!! I haven’t been around in a while…

My Living Room and Desk Area

My Living Room and Desk Area