Intermediate perennial ryegrass - diploid

  • Bred in Northern Ireland by AFBI and first officially listed in 2012

  • Performs very well under both cutting and grazing management schemes although its performance is best suited to grazing management

  • Glenariff’s key feature is a high quality

Species: Lolium Perenne

Officially listed in: England, Wales and Scotland

Heading dates: England & Wales 25th May, Scotland REE 39

Ploidy: Diploid

Bred in: Northern Ireland

Most suited to: Any medium - long term grazing and / or cutting ley



Across the multiple geographical locations, and throughout the year, Glenariff provides high quality forage from both silage and grazing management and grazing D values are particularly good across all regions.


Other Attributes

Glenariff has excellent disease scoring 8.3 for both Crown Rust and Mildew. It has excellent winter hardiness and good ground cover.

Being a diploid, you should expect an average of 600,000 seeds per kilogram and a slightly more prostrate growth habit. Glenariff therefore brings ground cover and a higher plant population than tetraploid counterparts to mixtures.


Before recommendation, Glenariff has been extensively trialled across over 10 locations in the United Kingdom to gather data on its performance in multiple climatic conditions.


Glenariff was bred for Barenbrug UK at AFBI (Agri-Food & Bioscience Institute) in Northern Ireland. The variety was named after one of the nine Antrim Glens and the Glenariff Forest Park covers over 2,470 acres including some stunning waterfalls.



DESCRIPTION: Dark green, densely or loosely tufted. Folded shoot and leaves.

FLOWERING HEAD: Flattened spike with the spikelets arranged alternately on opposite sides of the stem. The spikelets are stalkless with the narrow, rounded face fitting against the stem.

LEAF BLADE: Ribbed on upper surface, smooth and shiny underside. Red at base of stem.

AURICLES & LIGULE: Auricles are usually well developed, up to 1/12 of an inch (2 mm) long, or are sometimes lacking.



Intermediate perennial ryegrass