You cannot fertilize your own crops but it's your neighbors' who can do the fertilizing for you. You both will gain extra experience with your neighbor an extra coins for every fertilized crops.
Cows don't any crops on farmville.
You cannot harvest your neighbour's crops in FarmVille. You can, however, fertilise their crops and feed their chickens during visits to their farm.
water and fertalize crops
no
Currently, there is no way to speed the growth of your crops in FarmVille. This may or may not be added as a feature in the future.
The snow blanket does not affect the planting or harvesting of cropes in farmville, so yes you can plant crops.
No
On Farmville, you cannot fertilise your own crops. If someone helps on your farm and your plants are not fully grown, they will get the option to fertilise your crops. They can only fertilise five at a time.
You install the FarmVille toolbar from FarmVille.com
Alot of your crops become fertilized.
Harvest crops.
use the hand tool