Penn sent me another photo yesterday on the amazing growth of his Phylostachys nigra 'Black Bamboo' growing in the Northern California foothills. I posted last week (May 18) on the progress of his running bamboo privacy screen in the making. Already performing beyond expectations, the new Black Bamboo culms are at 9 feet tall as of yesterday, May 25.
What impressive growth. Penn did all the right prep, installing bamboo rhizome barrier (which isn't easy, but worth it), showing how running bamboo can be planted responsibly and with great results.
Mad Man Bamboo
Mad Man Bamboo on Facebook