Grasses ·Growing Guide
Bromegrass
Bromus riparius (Meadow Brome) / Bromus inermis (Smooth Brome)
Meadow BromegrassGrassesLow Maintenance
A deep-rooted, sod-forming forage grass that produces high-quality hay and pasture in northern climates. Bromegrass spreads aggressively via rhizomes, forming a dense sod that suppresses weeds and provides excellent erosion control. Smooth Brome (Bromus inermis) is the most common type, prized for high palatability, cold hardiness to Z...
Shop Wicked Tuff Turf →Overview
About Bromegrass
Bromegrass is a cornerstone forage grass across the northern United States and Canada. Smooth Bromegrass (Bromus inermis) has been the dominant hay and pasture grass in cold climates for over a century—its aggressive rhizome system, excellent cold hardiness, and deep root network make it nearly indestructible once established. Meadow Bromegrass (Bromus riparius) is a newer alternative with faster regrowth after cutting, better suited to intensive rotational grazing.
For hay production, Bromegrass produces its highest quality at the early heading stage (before seed heads fully emerge). Cut too late and protein drops significantly while fiber increases. Paired with alfalfa, Bromegrass creates the classic northern hay field combination—the alfalfa provides protein and nitrogen fixation while Bromegrass adds bulk and persistence.
Not a lawn grass. Bromegrass is too coarse, too tall, and too aggressive for residential turf. Its value is in pasture, hay, conservation, and erosion control at field scale.
For hay production, Bromegrass produces its highest quality at the early heading stage (before seed heads fully emerge). Cut too late and protein drops significantly while fiber increases. Paired with alfalfa, Bromegrass creates the classic northern hay field combination—the alfalfa provides protein and nitrogen fixation while Bromegrass adds bulk and persistence.
Not a lawn grass. Bromegrass is too coarse, too tall, and too aggressive for residential turf. Its value is in pasture, hay, conservation, and erosion control at field scale.
Fit
Where It Shines
Best for
- Hay production in northern climates
- Permanent pasture for cattle and horses
- Conservation Reserve Program (CRP) plantings
- Erosion control on large acreage
- Waterways and grass swales
- Pairing with alfalfa for mixed hay fields
- Cold climates (Zones 2-5) where other forages struggle
Not ideal for
- Residential lawns (too coarse and tall)
- Small-scale or urban applications
- Wet or poorly drained soils
- Acidic soils (below pH 6.0)
- Intensive rotational grazing (Smooth Brome recovers slowly—use Meadow Brome)
- Situations requiring fine-textured turf
From Seed to Stand
Establishment & Growth
Germination
Days 7-10: First seedlings visible. Days 10-14: Main germination flush. Moderate establishment speed. Seedlings are broad-bladed and easy to identify.
Growth Habit
Rhizomatous (aggressive spreading via underground stems). Sod-forming. Can be invasive in some contexts.
Establishment Timeline
First emergence: 7-10 days. First hay cutting: 60-90 days. Mature sod: 12-18 months. Full rhizome network: 2-3 years.
Rates & Care
Seeding & Maintenance
| Seeding rate (new) | 15-25 lbs per acre (pasture/hay); not typically used per 1,000 sq ft for lawns |
|---|---|
| Overseeding rate | 10-15 lbs per acre |
| Soil temp to germinate | 50-55°F |
| Mowing height | 4-6 inches (forage/hay); not typically mowed at lawn heights |
| Minimum mow height | 3 inches (cutting below 3 inches stresses the plant) |
| First mow | When grass reaches 8-10 inches for first hay cutting |
| Soil pH | 6.0-7.5 (prefers neutral to slightly alkaline) |
| Soil preference | Deep, well-drained loam to clay loam. Performs best in fertile, heavier soils. Tolerates moderate clay. |
| Nitrogen needs | 2-4 lbs N per 1,000 sq ft (or 60-100 lbs N per acre for hay production) |
Conditions
Tolerances
SunFull sun (6-8+ hours)
ShadePoor to Moderate
DroughtGood to Excellent
TrafficModerate
ColdExcellent
HeatModerate
Hardiness Zones2-7
Step by Step
How to Sow
1
Step 1: Prep
Test pH (6.0-7.5) and prep firm, weed-free bed
2
Step 2: Fertilize
Apply phosphorus-rich starter fertilizer
3
Step 3: Sow
Broadcast or drill seed at 15-25 lbs per acre
4
Step 4: Contact
Plant max 1/2" deep; firm with cultipacker
5
Step 5: Water
Keep soil moist during germination
6
Step 6: Mow/Establish
First harvest at early heading (60-90 days)
Feeding & Timing
Fertilizing & Season
Fertilizer Recommendation
Apply 60-100 lbs N per acre annually for hay production. Split into spring and post-first-cutting applications. When paired with legumes (alfalfa, clover), reduce nitrogen by 50-75% as legumes provide N through fixation. Recommended: Wicked Growth commercial fertilizer program.
Find the right Wicked fertilizer →Seasonal Planting
Best planted late August through early September for fall establishment (zones 3-5). Spring planting (April-May) is the most common timing for bromegrass, particularly when frost-seeding onto existing sod. For hay fields, spring planting allows establishment before summer, with first harvest possible by mid-summer.
In Context
How It Compares
Bromegrass vs. Orchardgrass: Brome is more cold-tolerant and drought-tolerant; Orchardgrass recovers faster after cutting and handles more shade. Bromegrass vs. Timothy: Brome is more drought-tolerant and persistent; Timothy produces higher quality hay but is less aggressive. Bromegrass vs. Tall Fescue: Brome spreads via rhizomes (Tall Fescue doesn't) and is more cold-hardy; Tall Fescue has deeper individual roots and better heat tolerance.
Answers
Frequently Asked Questions
What is bromegrass and what types are available?
Bromegrass refers primarily to two species: smooth bromegrass (Bromus inermis) and meadow bromegrass (Bromus biebersteinii). Smooth brome is the most widely planted, spreading aggressively via rhizomes to form dense sod. Meadow brome is a bunch-type grass that does not spread, establishing more quickly and recovering faster after grazing. Both are cool-season perennial grasses used for hay, pasture, and conservation plantings in USDA zones 3-7.
What is the difference between smooth bromegrass and meadow bromegrass?
Smooth bromegrass spreads by rhizomes, forming dense sod over time. It is slower to establish but more persistent and better for erosion control. Meadow bromegrass grows in bunches (no rhizomes), establishes faster, recovers more quickly after cutting or grazing, and produces higher forage quality. Smooth brome is preferred for hay fields and permanent pastures. Meadow brome is preferred for rotational grazing systems where quick regrowth between grazings is essential.
When should I plant bromegrass?
Plant bromegrass in late summer (August-September) for best establishment, or in early spring (March-April). Late summer planting avoids spring weed competition and allows 6-8 weeks of fall growth before winter dormancy. Bromegrass germinates in 10-14 days at soil temperatures above 50°F. Spring plantings are viable but face more weed pressure and summer heat stress during the establishment year. In zones 3-5, mid-August through early September is the optimal window.
What is the seeding rate for bromegrass?
Seed smooth bromegrass at 15-20 lbs per acre for pure stands, or 8-10 lbs per acre in mixes. Meadow bromegrass: 12-15 lbs per acre pure, or 6-8 lbs per acre in mixes. For small areas, use approximately 0.5 lbs per 1,000 sq ft. Plant 0.25-0.5 inches deep. Bromegrass seed is light and fluffy, making it difficult to flow through standard seeding equipment—mix with a carrier like cracked corn or use a grass seed drill with agitators.
Is bromegrass good for hay production?
Smooth bromegrass is an excellent hay grass, producing 2-4 tons of dry matter per acre with 10-14% crude protein when harvested at the proper stage (boot to early heading). It cures (dries) well in the windrow and makes clean, leafy hay that livestock readily consume. Harvest timing is critical—quality drops rapidly once seed heads emerge. Two cuttings per year are typical in zones 4-6. Bromegrass-alfalfa hay is a premium product combining the energy of brome with the protein of alfalfa.
Does bromegrass go dormant in summer?
Yes. Smooth bromegrass commonly experiences a summer slump—a period of reduced growth during July-August when temperatures exceed 85°F. During this period, forage production drops significantly. Meadow bromegrass is slightly more productive during summer than smooth brome. To manage summer slump: avoid heavy grazing or cutting in late spring (deplete root reserves), maintain 3-4 inch stubble height, and apply nitrogen in early fall when growth resumes.
What soil conditions does bromegrass prefer?
Bromegrass grows best in deep, fertile, well-drained loam with pH 6.0-7.5. It tolerates moderate clay and performs adequately on sandy loam. Smooth bromegrass is moderately drought-tolerant due to its rhizomatous root system but performs best with consistent moisture. It does not tolerate prolonged waterlogging or highly acidic soils (below pH 5.5). Bromegrass responds strongly to nitrogen fertilization—apply 50-80 lbs N per acre in spring and again in early fall for maximum production.
