Fold the foil over the asparagus and seal the ends together.
Place the asparagus foil packs on the grill, close the lid and grill for 5 minutes.
Carefully flip the packs over and grill for another 5 minutes, or until the asparagus is fork-tender. The cooking time will depend on how thick the stalks are.
Open the foil packets carefully to let the steam out. Serve with the orange wedges!