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Nimblewill
Also known as: Nimbleweed
You'll see nimblewill (Muhlenbergia schreberi), a perennial grass, in lots of lawns in eastern North America. It's commonly called "Nimblewill" because of the incredible speed with which it grows. It does best in shady areas.
Scientific classification
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Perennial
Lifespan
Grass
Plant Type
Summer, Fall
Bloom Time
23 cm to 46 cm
Plant Height
Green
Flower Color
Winter dormancy
Dormancy
Deciduous
Leaf type
10 - 38 ℃
Ideal Temperature

Attributes of Nimblewill

Growth Rate
During spring, the moderate growth rate of nimblewill gives it the resilience to establish a strong root system before the growing season peaks. This steady yet substantial growth allows optimum leaf production and height increase but delays flowering until the end of spring, showing an elegant balance between survival and proliferation. Seasonal differences in growth speed are minor, underscoring nimblewill's robust adaptability.

Distribution of Nimblewill

Distribution Map
Nimblewill is a plant native to the temperate and tropical regions of North America. Its range has expanded beyond its native habitat to parts of Southern and Eastern Europe where it has been introduced. This species has adapted to a range of climatic conditions across these continental regions.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Man-made or disturbed habitats, shores of rivers or lakes
Hemisphere Trend Curve

Weed Control

Nimblewill is a plant native to North and South America. Despite its geographical origins, this plant is often categorized as a weed due to its fast-growing, invasive nature. Its ability to rapidly reproduce and spread through an extensive root system contributes to its weed status. One of its hallmark characteristics is its outstanding adaptability, enabling it to take hold in various soil types, light conditions, and temperatures. This resilience makes nimblewill particularly harmful to gardens as it competes with desired plant species for nutrients, sunlight, and water. Its tendency to form dense mats of foliage also restricts the growth of other plants, leading to monoculture and loss of biodiversity in the garden. Nimblewill's primary mode of dissemination involves stoloniferous growth, meaning it produces creeping above-ground stems or runners. These stolons extend outwards, enabling the plant to colonize new areas and outcompete other plants.
How to Control It
The most effective season for removing nimblewill is during late spring or early summer, before the plant has a chance to seed. During these seasons, nimblewill is at its most responsive state which makes uprooting easier and more successful. Here are a few methods for organic control or removal of nimblewill:
  1. Hand weeding: This is the simplest and most direct method. With a gardening glove and a small trowel or a weed puller, you can uproot the plant completely, ensuring that all its roots are pulled out.
  2. Smothering: To do this, cover the area of nimblewill infestation with thick layers of newspapers, cardboard or landscape fabric. Make sure to overlap the edges to prevent nimblewill from creeping through. After this, add a thick layer of organic mulch on top. The smothering material cuts off light and air, causing the weed to weaken and die.
  3. Solarization: This method works best during the hottest months of summer. Start by mowing the nimblewill to the ground. Then, moisten the area and cover it with a clear plastic tarp. As the sun's rays heat the tarp, the underneath heat kills nimblewill and its seeds.
  4. Organic herbicides: Products with ingredients like acetic acid (vinegar), citrus oil or clove oil can be used. They work by dehydrating the weed. However, repeated applications may be necessary as they only kill the parts of the weed it reaches.
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Quickly Identify Nimblewill

1
Mat-forming growth habit sets nimblewill apart in Poaceae family.
2
Flowers bear spikelets in narrow panicles measuring 2-8 inches (5-20 cm).
3
Small, spindle-shaped brownish grains exhibit wind-dispersed nature.
4
Leaf blades are smooth, textured, and up to 3.5 inches (9 cm) long.
5
Slender, wiry stem reaches 1/2 to 2 feet (15 to 60 cm) in length.
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RELATED: How to identify Nimblewill

Care Guide for Nimblewill

Every week
Water
Full sun
Sunlight
10 - 38 ℃
Ideal Temperature
Water: Nimblewill thrives in moist, temperate regions, requiring consistent hydration but can tolerate brief dryness. Water weekly to maintain its preferred moisture levels, as overly dry conditions can impede growth and affect its lush appearance.
Fertilize: To enhance growth and blooms of nimblewill, apply a slow-release fertilizer in spring and mid to late summer, especially in poor soil. Dilute a balanced fertilizer by half before application for optimal results.
Pruning: Nimblewill is a semi-evergreen grass that benefits from pruning in late winter to early spring. This process removes dead leaves and promotes new growth. Use hedge trimmers or sharp scissors to cut foliage to about 1-2 inches above the ground.
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RELATED: How to Grow and Care for Nimblewill
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