Well, maybe squirrels also like to see those peanuts growing rather than eating them....lol... I have searched from Google about growing peanuts.

Here is a link that might be useful: growing peanuts

Thanks for the link. I'm afraid that they won't have grown long enough to make peanuts, but I'll find out after the first frost kills the plants & I pull them up. In the meantime, I guess they're fixing nitrogen in the soil, so that should be good for the other plants.