Typically you would have to have a minimum of 10 inches of a ponytail to donate to one of these events.  Shoulder length hair would not be long enough for them to use. 

You don't say why you are so desperate to donate.  Are you aware that most of the donated hair is not used for wigs?  Most of it is just sold for cash.

In my 42 years of life I have had my hair anywhere from two inches to BSL.  Multiple times.  Shoulder-length hair is the most frustrating length of all.  You feel it's not really long enough to do anything with.  Ponytails are just stubby little things that stick out from the back of your neck and look stupid.  You can't pile your hair elegantly on your head.  You can't do any of the things yet that you've been growing your hair out for. 

At the same time, you don't feel you have any real style.  It's too long to be perky and cute.  For it to look any good at all you have to mess with it, but what do you do?  So it just sort of hangs there, neither fish nor fowl, and in the meantime the ends tickle the tops of your shoulders and can be really annoying.

Sort of like a cat watching your fingers type and taking a swat now and then.  (Ouch!  Cut it out, Cream!) 

So you want to just give up and get rid of the stuff.

DON'T!   

One inch will make all the difference in the world.  Once it gets past your shoulders and you aren't dealing with the annoying tickles and folds and bends of it touching the tops of them, life gets much better.  If you cut it, you might be disappointed because you really wanted to grow it long and now you have to start all over. 

The two ways I have gotten through this stage are putting up just the front of my hair or somehow curling it since it is stick-straight.  I used to get perms when I was growing my hair long because little curls escaping from your updo look sooo much better than little straight wisps, and the only way I felt I had any style or could stand the growing out stage was if I curled it. 

But I knew that wasn't an option this time because I was going for really long hair, and a perm would be too damaging.  I don't remember what I did this time.  I don't think it was a big problem, but then I was living in Saudi Arabia and there were no salons.  (I don't recommend that option for getting through this).

Two months.  That's all you need.  Can you stand your hair for two more months?

I want to do it because its always something i've wanted to do but i've never been brave enough, i also play rugby now and long long hair isnt an option! 

I dont know if i'd donate my hair but i just know that i want it cut! I actually fancy shaving it, anyone suggest charitys i could do it for?

i mean even if i dont donate it, i'd try to raise some money for it