Turfgrasses ›

Rough Bluegrass

Description

Rough (also called roughstalk) bluegrass has a relatively limited adaptation as a turf species because of intolerance to heat, drought, and traffic. It is also very patchy in appearance and therefore does not perform well in mixtures. However, rough bluegrass is sometimes used alone or in combination with perennial ryegrass for winter overseeding of golf course putting greens. Rough bluegrass can often be confused with Kentucky bluegrass. One way to distinguish them is to examine the root structures: rough bluegrass has stolons (above ground) and Kentucky bluegrass has rhizomes (below ground). Another way to distinguish between them is that rough bluegrass has a long, pointed membranous ligule and Kentucky bluegrass has a short, even membranous ligule.

Presentations

Publications

Species Data

Seedhead/Flower

seedhead is a panicle with flattened spikelets with 2-3 seeds each

Vernation type

leaves folded in the bud

Ligule Type

membranous; sharp pointed, entire, may be hairs along the edge, 0.16 - 0.24 inches (4 - 6 mm) long

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Growth Season/Life Cycle

cool season turf or perennial weed

Auricle type

absent

Leaf blade tip shape

boat shaped; flat, sharply creased, glossy, edges rough at least near tip; two distinct, clear lines, one on each side of the midrib

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Leaf blade width

0.04 - 0.16 inches (1 - 4 mm) wide

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Stolon Presence

present

Rhizome Presence

absent

Collar Type

divided by midrib, distinct

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Sheath Margin

open part way only

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