For the Pedology mod, you can increase the wetness level of ground blocks by 1, but the maximum wetness you can reach is 2 to avoid creating mud lakes only with a watering can. ;-)
Anything else currently can’t become wet; you’d simply waste your water. ;-)
##Support
Currently, the mods Farming and Pedology are supported.
As for water, any node which is member of the `water` group can be used to fill up the watering can.
##Dependencies
There are only optional dependencies:
*`farming`
*`pedology`
However, it recommended to use at least one of these mods, otherwise you have nothing to use the watering can on. ;-)