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Lolium rigidum
Also called Mediterranean Rye Grass, Mediterranean Ryegrass, Annual Ryegrass, Rigid Italian Ryegrass, Rigid Ryegrass, Stiff Darnel, Stiff Ryegrass
Wimmera ryegrass is an annual forage grass from the Mediterranean region, grown as pasture in Australia but also a serious weed of wheat and canola. It sprouts after autumn rains and flowers in late winter to early spring.
Lolium rigidum is a species of annual grass. Common names by which it is known include annual ryegrass, a name also given to Italian ryegrass (Lolium multiflorum), rigid ryegrass, stiff darnel, Swiss ryegrass and Wimmera ryegrass. It is a native of southern Europe, northern Africa, the Middle East and the Indian subcontinent and is grown as a forage crop, particularly in Australia, where it is also a serious and economically damaging crop weed.
Lolium rigidum is a native of the Mediterranean area. Its natural range includes Western, Southern and Central Europe, northern Africa, the Near East, western Asia and the Indian sub-continent. It has spread to many other parts of the world and is considered invasive in some regions. It is planted in Australia as a forage crop but not usually in Europe. It was introduced as a forage crop in Australia around 1880, but has since proven to be an economically damaging weed that infests other more important crops, such as canola and wheat.
Lolium rigidum is grown as a forage crop in suitable areas. About 80% of the seed germinates in the autumn, soon after the first significant rains, and about 5% may remain dormant for twelve months. The plant has vigorous growth, and flowering is initiated when the day length is at least eight hours. This means that the crop has a relatively uniform flowering period in late winter/early spring.
Rye Grass · Tall fescue · Italian Rye Grass · Perennial ryegrass · Darnel ryegrass
Text excerpted from the Wikipedia article Lolium rigidum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
