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field brome

Bromus arvensis · Poaceae

field brome (Bromus arvensis)
Photo: (c) Dmitriy Bochkov, some rights reserved (CC BY) · CC BY · via iNaturalist

field brome (Bromus arvensis) is a annual grass or grass-like plant in the Poaceae family. It is introduced to North America rather than native. USDA records it as hardy in zone 4 and warmer, down to about -23°F.

At a glance

Typegraminoid USDA
Lifecycleannual USDA
Native statusintroduced USDA
Mature height3 ft USDA
Lightfull-sun USDA
Water needmedium USDA
Growth raterapid USDA
Soil pH5.2–7.5 USDA
BloomApril–May USDA
Flower colorYellow USDA
Hardiness zones4 and warmer USDA
Guild layerherb-layer Derived
Nursery availabilityNo Known Source USDA

USDA quoted from the USDA PLANTS database · Derived computed by a fixed rule from those columns. No value on this page is estimated.

Growing conditions

It needs full sun. USDA rates it as having moderate water needs. Its drought tolerance is rated low. It will not tolerate waterlogged soil — USDA rates its anaerobic tolerance as none. It is recorded on soils from pH 5.2 to 7.5 — a broad range that spans acidic through mildly alkaline ground. Its cold limit is zone 4.

Size and growth

At maturity it reaches about 3 ft, making it roughly waist to chest height. It grows quickly.

Bloom period

USDA records a bloom period of April through May. Flowers are yellow.

A flowering date, not a pollinator rating.

Foliage, flower and season

Summer foliage is green, medium in texture. Its flowers are not conspicuous — a plant for form and foliage. Its active growth period is fall, winter and spring.

What the site needs to provide

USDA records it across sites receiving 26 to 55 inches of annual precipitation. It needs at least 120 frost-free days to finish its season. It roots to at least 12 inches. Fertility requirement: medium.

Propagating it

Seed is the only propagation method USDA lists. Division and cuttings are not listed as options. USDA records no cold-stratification requirement, so seed should germinate without a chilling period. Its seed spreads at a rapid rate. It does not spread vegetatively, so it will stay where you put it.

Resilience and wildlife

Browsing animals find it moderately palatable, so expect deer and rabbits to take an interest. Its fire tolerance is rated none. Its growth form is recorded as bunch.

Role in a guild

Herb layer. In a layered planting this is the herbaceous middle — perennials and grasses that fill the space between ground cover and shrubs. The layer is derived by a fixed rule from growth habit and mature height.

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Tags

deciduousclay-tolerantintroducedfull-sunfast-growing

Related plants

Others in Bromus

Similar role and hardiness

Where this data comes from

Every value on this page comes from the USDA PLANTS database record for symbol BRAR5, or is computed from those values by a fixed rule. Nothing here is estimated or model-generated. Where USDA publishes no value, this page omits the claim rather than filling the gap.

Read our full data sources and methodology.

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