Good cover crop to plant now?
I've just put in a large vegie garden with raised beds and a wide area that is at ground level. Being this is the first time I'm planting vegies up here in Woodland, I didn't want to go overboard and plant the entire garden. I've filled my raised beds and I'm experimenting what is going to do well with our location. BUT I've got an area that is about 10x30 that we tilled up to help break up the hard soil and we've got a couple transplanted blueberries and raspberries along the edges. I'd like to put in a cover crop now rather than in the fall, in this area to help condition the soil and to keep down the weeds.. I've been told alfalfa is the way to go but I'm concerned that it'll go to seed before the frosts hit this fall. The bummer is my garden is completely fenced in and I have no way of getting in a lawn mower to trim down the alfalfa...
Anyone have any suggestions or maybe I'm not thinking about this correctly and need some guidance... Thanks in advance,