For being in Las Vegas, they grow an amazing selection of fruit and vegetables to pick.
They are open (from 1-4 days a week) about half the year, mostly in the summer and fall.
It's free to go in, you just pay for whatever you pick.
I have no insight into the owners being alleged fanatical Christians (nor should it matter!!), but I can attest to this being the ONLY farm in the LV area. The next closest is either Overton or pahrump and you can't pick your own there!
Word of warning: it is crazy packed during pumpkin patch season.