You can find Danny every Wednesday & Saturday at his stall at the market in Daro along the North "higway" opposite Mercury drugs and next to the agricultural compound.
The farm is in Mampas, in the upper reaches of Valencia. He has a display in the plaza for the current Chada Valencia festival. To get to the farm, go south on Burgos street, keep going, it will wind up and to the rightr. About 2 km up you will see a very large cell tower, after the tower the road will turn sharply right and UP. Instead, take the road that goes straight. It to will eventually go up. Follow it up and up about 3 km, and the Danny farm will be very aparent along the road.