Is it Dacron? Like the same stuff they use in sails?
I have a small mold problem on a (near) brand new kite.
No idea how it happened, the kite was fine when I first bought it, never even got it wet. Left it packed away for a couple of months and I notice today that some mold is starting to grow, its some green stuff.
I intend to use a 1% bleach solution in cold water to kill this pesky stuff. I want to make sure the material doesn't get damaged. I intend to soak for a couple of hours and then rinse and dry thoroughly.
So bummed - Its such a perty kite as well 
Just leave it. I had the same problem when I packed my kite away wet a while back. I was told salt water won't go moldy, but it does. It will dissappear after a few sessions and you don't have to risk bleaching / ruining your kite. Try not to pack it away wet again.
Good Luck.
Ok well I reckon I'll try it on a small part of the kite to start with and to see what happens - I'll keep you guys updated on how it goes.
I know this is the standard way of killing mold on sails - done it before, but I don't think kite material is quite the same thing.
where you kite and got the mould was there a lot of fresh water from a river or less salty than the ocean lake or something? I would have thought taking your kite out in the salt water and getting it really wet will kill the mould. Never had mould grow on sails/ kites anything wet from salt.
I think what happened is that there was some condensation in the kite when I flew the kite from overseas (somehow?). I have no idea though really.
Never flown it in anything other than the sea.
I also thought of the salt solution, but I don't know if it will be enough to kill it.
I asked my (scientist) dad what he thought and he suggested I chuck the kite into the pool - it would have the same effect as bleach at low concentrations.
^ and it's saltwater - so the kite is going to soak in the recently chlorinated pool for the next 2 hours or so. Hope the bladder doesn't fill with water!
I do worry about the effects of chlorine on the 'protective layer' they put on kites but I'll go grab some sail protector next time I get a chance just in case.
Where have you stored it in the off season? In a damp basement?
I wouldn't worry about it TBH. Using chemicals on your kite will damage the material.
Mould doesn't tend to attack synthetics. Once you get it out in the sun, salt and sand it should disappear.
Dont mean to hijack your post, but I have a question along similar lines...
Does sunscreen affect kite material? I have a big white spodge on a near new kite. I managed to wipe most of it off but i'm hoping whats left wont soak in and affect the canopy. Surely this has happened to others, is it any worse than just having a stain?
Mold wont grow if you use it more often,try to get out at least 7 times a week. Should make for a happy mold free kite
At which point did you think it would be a good idea to start using your kite to wipe your excess suntan cream off....?
can just see him on the beach now..
Hmm.. put too much suntan cream on...damn.. Towel... No... oh wait.. Ahh.. here we go.....
Ok it's out of the pool.
The mold that was in the stitching is gone 
There is only a TINY bit left on a white panel but it's gone from a healthy green to a dead black [}:)]
I rinsed the kite in fresh water and am leaving it outside to air a little before I take it inside and let it dry in the garage.
I found that much of the mold is growing in the seams where water just sits - wtf slingy! Luckily this water now has chlorine in it so I don't think it will be a problem for much longer :).
None of the colour has faded.
So there you are - salt water pools kills mold! :D ... well most of it.
For the record I only left it in there for about 3 hours (1.5 on each side).
I shall get some kind of protectant just in case and will dip (crash) my kite into seawater to get rid of the remaining chlorine.
Best solution I've found so far. Works everywhere
Mix 10 litres of warm water with 1kg of pool salt.
Apply liberally to your kite, tent, wife, dog with a soft broom
Leave in the sun until only the white salt remains on your kite, wife etc
Brush off the salt and the mould will be gone!!!
