Scientific NameBromus tectorum
Other Common Names:
Synonyms (former Scientific Names):
Bromus tectorum var. glabratus
Bromus tectorum var. hirsutus
Bromus tectorum var. nudus
Seeds germinate in early to mid spring and again late summer to mid autumn. Downy brome flowers in late spring to early summer
Leaves have a membranous ligule that is lightly fringed at the top. They have a characteristic spiral twisting and soft, short dense hairs on both front and back sides of the leaf. They do not have auricles. The sheath is rounded and hairy with pinkish veins.
The most distinctive characteristic about downy brome are the spiraling hairy leaves.
Flower Seed Head
The spikelets have 3-8 flowers each with a long awn. The seed head droops and is dense and soft with a purplish color.
Seeds are yellow to reddish brown. If the lemma is still attached the seeds have a long awn attached.
The plant typically grows in dry aeas with sandy or gravelly soil. It is common in turf, gardens, flowerbeds, nurseries, and sometimes agronomic crops.
Leaf Hair on Upper Surface
hairs from base to tip
rolled in bud
Mature Leaf Width
less than 5 mm
flat or oval
less than 1 mm