See for yourself how fast bamboo grows!
The three Seabreeze clumping bamboos above were planted 5' apart in May 2008 from 3-gal size plants. The hedge is now approximately 14' tall. When the bamboos were first planted in May, each plant was about 6' tall and only had one cane. When they were planted, the three Seabreeze looked similar to the two Seabreeze on either side of the sign pictured below (click on image to make it larger and easier to see):
Keep in mind that the bamboos in the top photo have only gone through one growing season. As the weather warms this spring, summer and fall, many new shoots will emerge growing to be taller and larger diameters than the existing canes. By the winter of 2009 our demonstration hedge will have formed an even more solid wall of green than it already is. By the same time, the bamboos in the photo below (which were planted in January 2009) will have gone through one growing season and will look just like the hedge pictured in the top photo.