There are dozens of tips for how to save money buying fruits and vegetables on the Internet. Very few are truly effective, because what produce you buy is more important than when or how you buy produce.
Here’s data from the US Department of Agriculture that shows the cost of fruits and vegetables – all normalized to the standard cup (click for full size).
There is a massive variation in price between corn & raspberries and potatoes & watermelon.
That price savings has very little to do with seasonality (or when you buy) or couponing (how you buy) and everything to do with what you buy.
Go forth and save money on produce.