How to Prune Indian fountain bamboo?
Remove weak, dead, damaged or spindly stems in spring and thin to show off stems to best effect. Cut out any flowering shoots promptly to discourage more from forming

Indian fountain bamboo · Yushania anceps
Also known as: anceps bamboo
Grow in moderately fertile, moist but well-drained or damp soil in partial shade, or full sun where soil stays damp in spring and summer. A rampant species, the creeping rootstock can become spread rapidly in warm, moist or favourable conditions and need restraining; see bamboo control and bamboo cultivation
Remove weak, dead, damaged or spindly stems in spring and thin to show off stems to best effect. Cut out any flowering shoots promptly to discourage more from forming