Alfalfa hay as mulch?

As i looked for straw on craigslist i found a guy who has old alfalfa hay. It's not that far away and i could borrow a trailer from my neighbor and bring some for our gardens.

I' need it for growing potatoes as much as the rest of the vegetables.

I also would like to make more of the garden available for vegetables next year.I'm thinking 'd cast oat seeds on the ground without tilting and cover it with (that old alfalfa)mulch..

What do you guys think?

A small warning that it may be moldy, that can cause issues with animals, for example goats get really sick for eating moldy hay. That would be my caution.

+ It is a slow release nitrogen source.
+ It is usually weed seed free.

- It can be GMO and sprayed with round up.
- The mold can be an issue for some plants

Make sure it wasn't sprayed and you are probably good.

My wife uses alfalfa when we can get it. Just put flakes around to cover up the soil. Don't worry about the mold, you aren't feeding it to horses. If it's free try to get it all and stockpile what you don't need. If it isn't, just get what you can afford. It is probably the best mulch we've ever used.

Alfalfa is a great fertilizer - go for it.