OBTAINING A VISA :
It is the volunteer's responsibility to obtain any necessary visas and work permits before making travel arrangements. WWOOF Greece cannot assist with this. There is a possibility that you will be held at the point of entry and returned to your home country if you arrive without the correct documentation.
All citizens of Shengen countries do not need a Visa (European Union countries are members of Shengen).
(If you are a student, investigate reciprocal temporary work permits.)