Need flower bed help .

These are blooming now and so pretty . I love them

Last years flower bed .

Help , grass keeps creaping in to my flower beds . How can I get rid of it with out using a spray that will kill my plants ? I always dig out the grass and cut out the edges . But the roots are still there real deep or grow under the cut out aria and the grass keeps comeing up . It's been so much work that I'm just not up to any more .

This is a picture of my rock garden last summer after the grass grew back across the cut out aria and below the rock garden . We always mow away from it so the seeds won't grow new grass in the bed . I always have to wait till the cool fall days to clean out the regroth of grass . I just can't take the heat of summer . I didn't feel well last fall so I'm doing the grass removel now .

I also need advice for full sun , drout tolerant flowering plants , no dead heading , tall or short will do , for NE Ohio. Plaining my flower beds now so I can pick up some new plants .

I started some Zennias and marigolds , fed then every Friday , Thanks Glenda at http://tootsietime.blogspot.com/ for your good advice , There getting huge , just have to wait till it's past the last frost date to plant them .

Thanks for your help .