Dragonvale changes seasons in their updates. If you still have snow after winter has passed, check your app updates to see if DragonVale is included.
It will make a lichen dragon
Mountain
Cold and lightning
Lava dragon
a earth dragon
Nope.
There is no dragonvale for PC
combine blue fire and crystil to make moomdragon.
DragonVale does not have redeem codes.
DragonVale is sometimes referred to as DV.
No you can't sell the Nursery on DragonVale.
DragonVale is a free download in the Apple App Store.