Bamboo occasionally will have some rough edges that can cause snags and scratches. Every few months, it is important to sand the bamboo. Usually a finer grit sandpaper--180 or above--is good enough to do the job without leaving a lot of visible scratches. Be sure to minimize or eliminate any splintering that could cause damage or injury, especially if you have children or pets that use the yard. With regular sanding, splinters should not be a problem.
Prevent Moisture Rot
Moisture is not good for bamboo and will cause the fence posts to rot. For this reason, the vertical frame posts for the fence are usually made of hardwood. In order to minimize the bamboo posts' exposure to moisture, plant the hardwood frame poles firmly in the ground while making sure that the bamboo poles remain two or three inches above the ground. The remaining gap can be covered by using hardwood or wire along the bottom.
Another method to prevent moisture from rotting bamboo poles is to treat them with a coat of clear, outdoor sealant every year or two. Two good options are polyurethane or linseed oil. Before applying any type of sealant, be sure to thoroughly wash the poles, preferably with a power washer. After application, place a string barrier around the coated poles in order to allow them to fully dry without being disturbed.
As simple as it sounds, looking for minor damage can be a good way to prevent any serious damage from occurring. Every few weeks, take a walk around the fence and check for any sharp edges, splintering, peeling or any pests that might be trying to nest in the poles. If you find termites or any type of pest, call an exterminator immediately.