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woolly rosette grass

Dichanthelium scabriusculum · Poaceae

woolly rosette grass (Dichanthelium scabriusculum)
Photo: (c) Caleb Catto, some rights reserved (CC BY) · CC BY · via iNaturalist

woolly rosette grass (Dichanthelium scabriusculum) is a perennial grass or grass-like plant in the Poaceae family. It is native to North America. USDA records it as hardy in zone 6 and warmer, down to about -3°F.

At a glance

Typegraminoid USDA
Lifecycleperennial USDA
Native statusnative USDA
Mature height2.5 ft USDA
Lightpart-shade USDA
Water needmedium USDA
Growth raterapid USDA
Soil pH4–7 USDA
BloomJune–August USDA
Flower colorGreen USDA
Hardiness zones6 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 grows in partial shade. 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 4 to 7 — a broad range that spans acidic through mildly alkaline ground. Its cold limit is zone 6.

Size and growth

At maturity it reaches about 2.5 ft, making it about knee height. It grows quickly.

Bloom period

USDA records a bloom period of June through August. Flowers are green.

A flowering date, not a pollinator rating.

Foliage, flower and season

Summer foliage is green, fine in texture. Its flowers are not conspicuous — a plant for form and foliage. Its active growth period is summer. USDA rates its lifespan as short, so plan on replacing or resowing it rather than treating it as permanent structure.

What the site needs to provide

USDA records it across sites receiving 40 to 65 inches of annual precipitation. It needs at least 200 frost-free days to finish its season. It roots to at least 4 inches. Fertility requirement: low — no feeding needed on ordinary garden soil.

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 slow 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-tolerantsandy-soilnativefast-growing

Related plants

Others in Dichanthelium

Similar role and hardiness

Where this data comes from

Every value on this page comes from the USDA PLANTS database record for symbol DISC2, 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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