attic grow vapour barrier?

Setting up a place to save some money and have a question about humidity and moisture. I Will be using soil in the attic and am just wondering if i should be using a vapour barrier. i dont want to have mould roaming around. Im sure it will be fine without the barrier if there is proper ventilation. But haven't tried a room inside yet.


thanks!

once you get the ventilation set up you should be fine, most attics tend to be on the dry side.