Leyland Cypress "Green Balls": Normal Cones, Not Pests

Identifying the Green Balls

The half-inch round green balls on your 10-year-old Leyland cypress branches are normal cones—the reproductive structures of this conifer. The small black dots inside are developing seeds.

Conifer Biology

Leyland cypress (× Cuprocyparis leylandii) is a gymnosperm ("naked seed" plant). Cones mature from green to brown, then open to release seeds. This is a sign of a healthy, mature tree.

No Action Needed

This is not a pest, disease, or abnormality. Continue monitoring for actual issues like bagworms (which you've battled), but the cones are completely normal.