Photo Credit: Nicole Kimmel, Alberta Agriculture & Forestry
Common Name: Japanese Brome
Scientific Name: Bromus japonicus
Habitat: grassland, disturbed areas
Provincial Designation: Noxious
Noxious weeds are plant species designated in the Alberta Weed Control Act. Noxious weeds must be controlled, meaning their growth or spread needs to be prevented.
Japanese Brome originates from Pakistan, central Europe and Eastern Japan.
Japanese Brome outcompetes native vegetation and can slow down succession on reclamation sites.
This invasive grass can grow up to 90 cm. Japanese Brome flowers are drooping and one-sided. The awns are 8-10 mm long and are sometimes bent at full maturity (awns are the hair-like ends of the individual grass seeds).
The first glume has three 'nerves' - a glume is the leaf-like structure at the bottom of the seed heads. The grass is usually covered with hairs with the exception of the main stem within the panicle (the branching cluster of flowers).
Can Be Confused With
Many native and ornamental grass species
Please keep your eyes out for it and report to firstname.lastname@example.org when in doubt.