We've done it for the last 5 years. For the most part things grew well - one frustration:

12 corn stalks was NOT enough. The article hints at it near the bottom:

> Corn is wind-pollinated and while capable of self-pollinating you will have more success with more plants. It is best to have at least 10-20 corn plants to provide sufficient pollen availability but plant more if you have the space to increase your success.

I would not recommend anything less than 20 corn plants, and if you are planting somewhere with some wind protection... more still. Our first 2 years - the corn was not adequately pollinated (12 plants in year 1, and 24 in year 2).

You can still eat some of it, but an ear that's only 20% kernel and 80% empty is a bummer.

The squash and beans are still delish.