Delaware Wildflowers

Rosa multiflora Thunb. ex Murr.
Multiflora Rose

Rosaceae — Rose family

Invasive non-native

Rosa multiflora — New Castle County
May 2001

Rosa multiflora — New Castle County
May 2001

Rosa multiflora — Middle Run Valley Natural Area
September 2009

Rosa multiflora — Woodlawn Tract
April 2016
Witch's-broom or rose rosette.

Rosa multiflora — White Clay Creek State Park -- Creek Road
May 2016

Rosa multiflora — May 2018

Rosa multiflora — May 2018

Rosa multiflora — Ashland
May 2019
The pistils are united into a long column, a distinguishing feature of the species.

Rosa multiflora — Ashland
May 2019
Leaves have 7-9 leaflets.

Rosa multiflora — Ashland
May 2019
Fringed stipules are another distinguishing feature of this species.