Invasive Species: Himalayan Blackberry

Rubus armeniacus

Himalayan blackberry was introduced in Marion County for berry breeding in 1922. Now it is the most widespread and economically disruptive of all the noxious weeds.

Why is it important to control?

It aggressively displaces native plant species and dominates most riparian habitats.

How can you identify it?

Close up image of Himalayan blackberry flowerClose up image of Himalayan blackberry berries
Habitat: Open, sunny areas with a variety of soil moistures. Disturbed areas.
Life Cycle: Perennial
Height: Up to 15 feet
Leaf Description: Compound leaves made up of 3 to 5 leaflets, dark green on top, white underside.
Fruit & Flower Description: White to pink flowers with five petals.  Small, edible berries are dark purple to black.
Bloom Time: April to August

How do you control it?

  • Dig out individual plants and remove the roots.

  • Shred/chip the canes and compost or leave on the ground.

  • Mowing the canes in late spring before plants flower. They will regrow, but won’t flower and produce berries.

  • Herbicide control:  Oregon State University Extension recommends a triclopyr or glyphosate based herbicide. Take care to avoid drift and be cautious near crops. FOLLOW ALL LABEL DIRECTIONS!

  • The Oregon Department of Agriculture has no approved biocontrols.

How to report it?

There are various ways you can report this noxious weed.

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