Garden peas or fava beans.

Beans are a poor choice for early seeding as they will need warmer soil to germinate. Peas of all types are a much better choice since you can actually sow in late fall and the seeds will germinate at first favorable conditions. Some people have used hairy vetch but you need to be prepared to knock it down. Your 90 day window is too extreme since many peas are able to be harvested in 60d; 40-50d to manage and replant.

field peas will work as well.

Thanks guys...Peas it is! I don't mind if its shorter than 90 days. I can harvest them and let the soil sit....or grow a quick set of Alfalfa sprouts. That's no problem.

And you can sell pea shoots for stir fry, too.

Fava beans are my fixer of choice.

They are cold tolerant and you can eat/sell the beans AND the leaves.

Take a look here to learn more about them.

Thanks snarg and lazy! Any particular type of peas that excel at micro-shoots? Even at the expense of a the end pea product.

Sugar snap peas, ordinary English peas ... anything but flowering sweet peas.

Field peas (like the kind available at feed stores). The others would be too expensive to sell as pea shoots when you factor in the cost of seed.

Thanks guys. I'm going to do snap peas for the outside beds and alfalfa and pea shoots for the inside beds. Now to track down some decently-priced seed in Canada......