Flattened oatgrass (Danthonia compressa)

Flattened oatgrass

Flattened oatgrass (Danthonia compressa) is a perennial grass that can grow from 61 to 91 cm tall. It has compressed stems that grow in bunches or tufts. Native to the eastern United States it is commonly found growing in disturbed soils or open wooded areas. It blooms in spring with light green flowers and produces fruit in summer.

Scientific classification

Species

Flattened oatgrass (Danthonia compressa)

Grasses, sedges and allies

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Perennial

Lifespan

Grass

Plant Type

Summer, Fall

Bloom Time

73 cm

Plant Height

White, Green, Purple

Flower Color

Deciduous

Leaf type

0 - 25 ℃

Ideal Temperature

Attributes of Flattened oatgrass

Growth Rate

Flattened oatgrass's moderate growth rate primarily manifests in Spring with notable structural vegetative growth and increased leaf production. The growth speed corresponds with its reproductive cycle, initiating flower bloom. There might be slight variations in growth speed in other seasons, but Spring sees significant developments. This particular growth pattern, balancing between growth and survival, is a horticulturally fascinating aspect of flattened oatgrass.

Distribution of Flattened oatgrass

Distribution Map

Flattened oatgrass is native to the temperate regions of the northern hemisphere, with a range that spans across continents such as North America. It thrives in a variety of ecological areas within this broad native range. Though primarily a wild grass in these areas, it's also recorded as an introduced species in major regions of Europe.

Native

Cultivated

Invasive

Introduced

No species reported

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Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Flattened oatgrass

Every week

Water

Full sun

Sunlight

0 - 25 ℃

Ideal Temperature

Water: Native to temperate regions, flattened oatgrass prefers moderate moisture and consistent soil hydration. Weekly watering supports its health. As a grass species, flattened oatgrass adapts well to seasonal rainfall, influencing its growth cycles and dormancy periods.

Fertilize: Fertilizing flattened oatgrass with mulch or compost enhances soil nutrients, promoting strong growth. Apply a thin layer annually in spring or early fall, avoiding overfertilization. Spread evenly near the root zone, adjusting rates for flattened oatgrass's active and dormant periods for optimal health.

Pruning: Flattened oatgrass thrives with early spring pruning to promote robust growth and maintain shape. Use clean shears to remove old foliage and spent flower stalks, encouraging vigorous new growth and tidy appearance while preventing disease and managing its spreading tendencies.

Propagation: Propagating flattened oatgrass involves division, where clumps are separated to encourage new growth. This should be done during active growth, ensuring each section has enough roots for establishment, which conserves growth traits and maintains uniformity in the new plants.

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