I'm new to growing bamboo and have been trying to find an answer to the following question, with no luck.

I am about to plant a screen with a variety called Golden Weaver. I've seen them mature, spaced 6 ft (2 m) apart. In this arrangement, they produce an effective privacy barrier, above a height of about 6 ft. However, below that, there are "windows" between each clump.

If they were planted at 3 ft apart, it seems as though the screen would be much more effective. I understand that they would be somewhat stunted due to crowding, but would they be unhealthy?

Should I just put in another row, staggered, and give up the yard space?

If anyone out there has tried this, please let me know!