Photos copyright Ned Jaquith, 2008
Swollen internodes

Photos copyright Ned Jaquith, 2008
Photos copyright Ned Jaquith, 2008
Solid culm 
Photos copyright Ned Jaquith, 2008
Rhizome showing air canals 

Phyllostachys heteroclada
              f. solida
Common name: "Solid Stem"

Maximum Height: 25 feet, average 20 feet
Diameter: 2 inches
Hardiness: -10
USDA Zone recommended 6 through 10

This form of water bamboo usually has a solid stem, making it particularly strong.  Also, reportedly more cold hardy than regular P. heteroclada. Like other forms of water bamboo it  has air canals in the rhizomes and roots which allow it to grow in wet soils where other bamboos would suffer, although it will do best in well draining soil. As seen in the photo of  the base of the culms, this form sometimes has distorted, shortened and swollen internodes. These solid stem bamboos are strong and flexible. They are also very resistant to splitting, making them very useful.  It is also called Phyllostachys purpurata.

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