How to Grow Cheatgrass
iNaturalist
Cheatgrass
Bromus tectorum
grassCheatgrass is an invasive annual brome grass native to the Mediterranean region, now widespread across western North America. It germinates in fall, grows through winter and spring, and dies after setting seed in early summer. Known for its aggressive spread and role in altering fire regimes in semi-arid ecosystems.
When should you plant Cheatgrass in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Cheatgrass timeline · Pittsburgh, PA (Zone 6b)
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Plant Cheatgrass
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Cheatgrass
Around Sep 14≈ 150 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Cheatgrass dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; particularly problematic in western zones 5-9
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Get my Cheatgrass timeline →Growth Stages
Germination & Seedling
2-4 weeksSeeds germinate in fall (September-November) with cool temperatures and moisture. Seedlings develop fine, hair-like leaves and establish shallow root systems.
Natural fall/winter precipitation triggers germination. No additional care needed for invasive populations.
Rosette & Vegetative Growth
4-5 months (November-March)Through winter and early spring, plants develop as dense rosettes with elongating tillers. Leaf blades are soft, hairy, and light green.
Winter dormancy conserves energy. Spring rains accelerate growth. Monitor for early signs if attempting control.
Bolting & Stem Elongation
4-6 weeksIn late spring (April-May), plants rapidly elongate, producing hollow stems 1-3 feet tall. Stems are smooth and hairless at the nodes.
Rapid growth stage is most visible. If controlling, target before stem elongation for best results.
Flowering & Seed Development
2-3 weeksProduces open panicles with 5-10 spikelets per branch. Florets have prominent awns (bristle-like extensions) that spread the seed. Panicles are 2-6 inches long.
Awns catch on fur and clothing, aiding seed dispersal. Control before flowering to prevent massive seed production.
Seed Maturity & Desiccation
2-4 weeks until plant deathSeeds mature by early summer (May-June). Plants yellow, dry out, and die back. Seeds remain viable in soil for 1-3 years.
Plants become extremely flammable at this stage, increasing wildfire risk. Seeds disperse readily by wind, water, and animal contact.
Companion Planting
Plan your garden →Avoid planting near:
Common Pests
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Rarely a serious pest; natural predators usually control populations
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Not typically damaging; no control needed
Uses
Ecological Concern & Fire Risk
WildlifeCheatgrass is a major invasive species that increases wildfire frequency and intensity in western rangelands. Its early senescence creates a highly flammable fuel load by late spring, altering natural fire regimes that native plants evolved with. [source]
Seed Dispersal Nuisance
HouseholdThe barbed awns (bristles) on cheatgrass seeds readily catch on clothing, animal fur, and vehicle tires, making it a persistent household and clothing contaminant. [source]
Limited Traditional Use
MedicinalWhile not commonly used medicinally today, some historical accounts suggest cheatgrass seeds were occasionally consumed by indigenous peoples and early settlers during food scarcity. [source]
Minimal Food Value
CulinarySeeds are technically edible but small and labor-intensive to harvest. They offer minimal nutritional value compared to cereal grains and are rarely intentionally consumed. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cheatgrass is not intentionally harvested. If attempting eradication: hand-pull seedlings in fall/early spring before roots establish; mow before seed set (late May-early June); apply herbicides (glyphosate, 2,4-D) in fall or early spring when soil is moist.
Fun Facts
- 🌱 Cheatgrass gets its common name from the misleading appearance of its spikelets—early farmers thought the grass was 'cheating' them by resembling valuable grain crops before revealing its poor seed quality.
- 🌱 The awned seeds perform a hygroscopic 'dancing' motion in response to humidity changes, literally screwing themselves into the soil to improve germination chances—a survival strategy that also drives the seeds into clothing and animal fur.
- 🌱 Cheatgrass has transformed the ecology of the western United States more dramatically than perhaps any other invasive plant, converting sagebrush rangelands that historically burned every 60-100 years into grasslands that burn every 5-10 years.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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