buy lots of treat houses
You feed them dragon food.
You either wait or buy food
If you mean food, you build a treat farm and grow it there.
Hacking in a DragonVale account for more gems and food is not allowed per the game rules.
You can earn coins by collecting from the habitats, selling dragons, or by racing.
There is no dragonvale for PC
if you enter the code: 10084572 you get 45 free gems
DragonVale is sometimes referred to as DV.
DragonVale does not have redeem codes.
No you can't sell the Nursery on DragonVale.
DragonVale is a free download in the Apple App Store.
There is no such thing as a Birthstone Dragon on DragonVale