Equisetum hyemale (Rough Horsetail)

Plant Description: Hollow stemmed blue-green perennial grass like species. Black bands around each sheath. Has a deep rhizome and spreads vigorously, especially in moist conditions. 

• Height: 1-4 ft

• Watering needs: high, but can tolerate seasonal moisture

• Sun needs: part sun

• Soil needs: wet

• Portland Plant List (Backyard Habitat Certification): Yes

Landscape Use and Ecological Function: Rough horsetail thrives in wet conditions with some light shade, often found in stream banks or rivers, wet forest woodlands or wetlands, and disturbed areas like roadside ditches. This species offers coverage and shade in ponds and streams for wildlife. Because this species grows quickly and readily, we recommend this species for well manages areas where its spread is welcomed like in forest wetland restoration or stream stabilization after invasive species are removed as it will compete with invasives. This also makes a great plant for contained wet areas like potted in a pond or under a gutter.