Don't just till the grass into the garden. Many bits of it will grow again
and it will become a weed problem in your garden. Most posters here are
anti-chemical and won't mention this, but the quick and easy way to solve
the grass problem is to spray it with glyphosate (Round Up), then till it in
a couple of days later.

Andrew

"James Egan" wrote in message
news
I'm planning on planting a small garden in my back yard. Currently
there's lawn with grass growing where I want to plant. When you till the
soil, can you just mix in the grass? Or should the grass be removed
first, then tilled, and compost added?

-Thanks