Cover crop - persian clover?

Have a bunch of this that has showed up in my lot and yard. Has purple flowers. It's about 6 inches tall in places.
Had only planted austrian winter pea, buckwheat, and millet in raised beds.
Wanting to encourage the clover it to add nitrogen to my rocky alkaline soil here in Texas. If I cut it with a lawnmower on the high setting think it will come back (or should I just let it grow till spring then chop it?). Looking forward to using it for compost, mulch, and in raised beds. Guess I've got the gardening itch. Wanting to make up for our drought last year.

Cal the plant in the photo looks like it could be Henbit.

Green Dean has an interesting article on the plant and it's look a likes.

http://www.eattheweeds.com/henbit-top-of-the-pecking-order/

Hmmmm, thanks Linda. I'll take a better photo and repost. Funny how it's popped up everywhere.

I'm getting the same thing popping up all over my back yard in Texas as well. I've been here for going on 4 years and this is the first year I've seen it.

We've been here going on 8 years and this is the first time we've seen it as well. Glad that it's edible and nutritious. Will use some for compost/mulch.