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AGM plants have been through a rigorous trial and assessment programme. They are:
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Other common names
common reed bennels
carrizo Danube grass ditch reed nal Norfolk reed pole reed spire reed spires
Arundo phragmites Phragmites communis
Phragmites are vigorous rhizomatous perennial grasses with linear leaves and large feathery purple panicles of flowers in late summer
Poaceae / Poaceae
P. australis is an invasive grass to 3m in height, forming an extensive colony of erect, leafy stems with drooping linear leaves which turn light brown in autumn, and terminal dark purple flowering panicles from late summer
Aspect South-facing or West-facing
Exposure Exposed or Sheltered
MoisturePoorly-drained, Moist but well-drained
SoilSand, Clay, Loam, Chalk
pHNeutral, Acid, Alkaline
Grow in deep, moderately fertile, reliably moist soil in full sun
Propagate by division from early spring to early summer
Suggested planting locations and garden types
Wildflower meadow Wildlife Gardens
Cut back in late autumn or winter
Generally pest free
Generally disease free
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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