RPR Grass Technology - Strong as Iron

RPR - Regenerating Perennial Ryegrass

RPR® - Regenerating Perennial Ryegrass is the first perennial ryegrass having the specific characteristic of spreading horizontally via determinate stolons. In the past, only smooth-stalked meadow grass grew this way in sports pitches. This characteristic makes RPR® many times stronger than other types of perennial ryegrass, while also growing at the same rate. And the result is a regenerating perennial ryegrass with the highest wear tolerance that is perfect for use in sports pitches.

RPR is unique 


RPR marks the rebirth of a subspecies of grass variety. In the United States, Lolium Perenne Stoloniferum, the subspecies to which RPR belongs, has not been observed since 1836. RPR is the first variety of perennial ryegrass growing via determinate stolons to have been officially registered in the US as Lolium Perenne Stoloniferum since that date.

Perennial ryegrass had been used for sports pitches and golf courses for quite some time, but RPR is an innovative novelty that Barenbrug introduced in the United States in 2010. There, the grass mixture was immediately found to be extremely suitable for sports pitches. In the US, Barenbrug’s RPR was granted an Innovation Award at the STMA (SportsTurf Managers Association) Show of 2011. In Europe, RPR was introduced in the Netherlands in 2012. Other countries were soon to follow: Belgium, Germany, Denmark, Sweden, the Czech Republic, Poland, Italy and Rumania. 

RPR grass technology for sports pitches, golf courses and public green spaces was also nominated for the Gouden Klavertje Vier innovation award of 2013 and the SportFM innovation award of 2015 in the Netherlands.

"UEFA is very satisfied with the result. The sward was created using Barenbrug’s RPR technology." 

John Hendriks and Gerdien Vloet
Hendriks Graszoden

Determinate stolons


RPR spreads horizontally by creating a natural network of determinate stolons that form a kind of netting in the sward, making for the best possible wear tolerance. Instead of individual grass plants, as in the case of traditional perennial ryegrass, each RPR grass plant is linked to other plants and to the soil. There is much less risk of the grass of sports pitches being kicked up or otherwise damaged because it is held in place on all sides, even during the most intensive use. So however intensive the circumstances of a football match or golf tournament may be, the dense sward will remain intact.


RPR Grass Technology - Plant

"There are some things you just have to see for yourself to believe them. Stoloniferous perennial ryegrass was a good example of something like that, but now that I’ve seen RPR, I really am a believer." 

Andy Newell 
Head of Turfgrass Biology

The best of two worlds


RPR is the first type of grass to combine strength and speed, so all the benefits of the grass mixture can be enjoyed at the same time. The grass germinates very quickly and is ready for intensive use as soon as it has created a dense sward. The strong grass species that were often used in the past, such as smooth-stalked meadow grass, germinate more slowly, and were therefore often combined with a faster perennial ryegrass. 

The resultant mixtures germinate and establish very quickly, but their wear tolerance leaves something to be desired. RPR solves this problem by combining strength with speed, in other words: the best of two worlds.

Less annual meadow grass


RPR is as strong as smooth-stalked meadow grass, but establishes much faster, greatly reducing the risk of the ingression of undesired annual meadow grass. This implies the advantage of a denser, better rooting sward that needs less fertilisers and water. RPR ’s determinate stolons create a very dense sward in which weeds and undesired grasses will have great difficulty growing. 

The strong, fast growing RPR will win the battle against the weeds and undesired grasses. Annual meadow grass may appear attractively green, but it can completely destroy a sward. Once it has become established, there’s no getting rid of it. RPR emerges victorious from the battle against annual meadow grass.

"If there’s a good correlation between your soil and your fertilisation strategy RPR will establish at an impressive rate, enabling you to save a lot of time in comparison with other grasses."

Michel Poncelet 
World-famous sports pitch consultant

Sports pitches that are as strong as iron


Perennial ryegrass is often used for sports pitches that are expected to endure heavy wear. But the swards of those pitches are also expected to be of excellent quality for every game. That can only be achieved with grass that’s as strong as iron and that can regenerate quickly. Perennial ryegrass is a good option, but RPR is even better. RPR guarantees superfast recovery and an extremely strong sward.

More information on using RPR for sports pitches


Golf courses that are as strong as iron

A high wear tolerance, little risk of damage and superfast recovery of the grass are important criteria for golf courses. Barenbrug’s extremely strong RPR mixtures are ideal for golf courses. There are three RPR mixtures that can be perfectly used for golf courses: RPR® Golf Ultrafine, RPR® Golf Extreme, RPR® Golf Dense. 

More information on using RPR for golf courses


Lawns that are as strong as iron

RPR® Lawn is an extremely strong mixture that is specially intended for lawns. It will thrive in many types of soil, making it very easy to use. RPR® Lawn is ideal for use in gardens, parks and pitches of neighbourhood football clubs. It was specially developed for professional gardeners, who will greatly appreciate this mixture’s many advantages. One of those advantages is that it is suitable for both seeding and overseeding, so there’s no longer any need to buy separate mixtures for that. Seeding and constant overseeding with RPR® Lawn will ensure a beautiful lawn that can tolerate a lot of wear and tear.

More information on using RPR for lawns