I'm about to run out of feed and need to buy SOMETHING. I only have 4 pullets, one that is 17 weeks and the others are 12 weeks old. I've read that layer feed should not be given until they actually start laying. So I guess my question is, with this size flock, and being limited to 25 pound bags of feed, what would you get? Can a laying hen do alright for the first month or two on grow mash? Thanks in advance. I'm getting quite the education this year!