DIY Network

Outdoor Greenery

Learn about several plant varieties and the planting information for each zone.

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giant reed grass is listed as a noxious weed
Photo 3 of 11Arundo donax is a non-native invasive grass from the Mediterranean area. It has escaped cultivation and invaded natural areas throughout the Midwest, South and West, particularly in wetland areas.

Giant Reed Grass (3 of 11)

It is listed as a noxious weed in TX and on the invasive lists for: VA, GA, CA, SC TN and the entire mid-Atlantic region.
Huge upright ornamental grass with reed-like foliage and purple to silver plumes
Plant in full sun to light shade
Can be invasive
Tolerates wet to moist soil, even standing water
Prune back to ground in late winter to early spring; fertilize in spring
Divide every few years in early spring
Height: 10-25 feet Width: 5-20 feet
Hardy in zones 6-10:
Zone 6: Plant in spring; plant in full sun; mulch in fall; remove mulch in spring; avoid exposure to salt; plant may flop over in wind, heavy snow or ice.
Zone 7: Plant in spring; plant in full sun; mulch in fall; remove mulch in spring; plant may flop over in wind, heavy snow or ice.
Zone 8: Plant in spring; plant in full sun; mulch in fall; remove mulch in spring; plant may flop over in wind.
Zone 9: Plant in spring or early fall; plant in full sun; mulch in fall; remove mulch in spring; plant may flop over in wind.
Zone 10: Plant in spring or early fall; mulch in fall; remove mulch in spring; plant may flop over in wind.

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