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| DESCRIPTION:
Italian ryegrass, also called annual ryegrass, is an upright annual that behaves
like a biennial or short-lived perennial. It grows vigorously in winter and
early spring.
Hairless seedling leaves are shiny. Flat blades have a short, membranous
ligule. Auricles are variable in size, clasping or blunt. The mature plant grows
1 to 4 feet (30 - 120 cm) tall. Terminal spikes are flat and
alternate
along
the
stem.
Long awns (bristles) on spikelets and at least 10 florets per spikelet help
differentiate Italian from perennial ryegrass.
Grass ID illustration.
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