Having friends will not help you with this, except that they may have some to sell, but that is really hit or miss. What I do to help combat running out of vegetables is, I have a separate "seed" garden with one of each veggie in it that I do not harvest unless I run out of that particular veggie and can't find it elsewhere. If I have to harvest a veggie from my seed garden (I have a few times), I immediately plant one back in the seed garden and one in my regular garden to get that veggie going again. I never use veggies from my seed garden for sales of any type even if I am desperate, they are ONLY use to restart the crop. Anyways, that is how I have worked with this issue, I'm sure others have their own strategy. The downside of my way, is I have fewer crop squares to plant in, but considering I fill my silo on a regular bases, I guess that hasn't hurt me too much.