Introduction

Miscanthus is a perennial ornamental grass often found in residential landscaping. The NC Invasive Plant Council lists Miscanthus as Rank 1 – Severe Threat. In addition to being an aggressive invasive species, it is highly flammable and contributes to the spread of wildfires.

Miscanthus is native to Asia. The earliest known introduction of Miscanthus to the USA was from Japan to Asheville, NC, in 1893 and later to Washington, DC, in 1894.  In 1907, the Biltmore Nursery in Asheville, NC, had at least four varieties available via mail-order catalog.

It can be found on roadsides and in residential plantings in Laurel Park. It is a prolific seed producer, a major reason for its rapid and widespread distribution. It also reproduces by an extensive root system.

Identification and Appearance

·       Upright, clump-forming perennial grass

·       Mature height 4–8 feet

·       Sharp leaf margins

·       Showy, feathery plumes (silvery to pinkish) produced late summer to fall

·       Persistent tan foliage through winter

·       Dense fibrous root system forming large crowns

Biology and Life Cycle

·       New growth begins in spring (April–May)

·       Flowering occurs late summer through fall

·       Wind-dispersed seed is produced in large quantities

·       Seed can establish along roadsides, utility corridors, and natural areas

·       Established clumps increase in size annually