A plan to cut down trees at the Walpole Country Club will need approval from the Sharon Conservation Commission because the land is near a wetland. Although the club has a Walpole address, part of the property is in Sharon, according to Peg Arguimbau, chairwoman of the Sharon commission. The club plans to cut trees that are obstructing the view of golfers at the edge of a fairway, she said. The club will need to assure the commission that it will protect the wetland by not allowing equipment to cross it, said Arguimbau, who added that she doesn’t expect the work to be controversial. A hearing is set for Thursday.