This weekend I used several discarded inexpensive curtain rods in the garden to protect flowers and shrubs from the hose as I drag it along while watering.
I cut the rods down to two-foot lengths. I temporarily removed the finial while I pounded the rod into the ground about one foot deep, leaving one foot of the rod above ground. Then I reattached the finial. You've probably noticed that rods come with different types of finial attachments. Some finials screw right into the end of the rod while others may have a side screw that threads through a small hole in the side of the finial and tightens against the side of the rod. I have a couple of different sets of old rods with both methods of attaching the finial to the end of the rod. Either type will work for this purpose---just be careful not to damage the finial or its attachment while pounding the rod into the ground. I'm happy to have found a new use for these old rods and to have my flower beds protected!