Resilient and stress-tolerant turf with less input

4turf® is a range of turf tetraploid perennial ryegrass varieties, developed to be quick-establishing, deep-rooting and tolerant to stress. It offers unique stress tolerance together with fast and strong establishment even at low temperatures.

4turf® varieties are more resilient than diploid perennial ryegrass varieties. They have better stress-tolerance and recover faster after periods of extreme temperatures and disease attack. The extra set of chromosomes in 4turf® variety gives you a healthy, high-energy plant that needs minimal input to keep your turf green and inviting. 4turf® is a more sustainable solution.

Turf tetraploid perennial ryegrass

4turf® has an outstanding tolerance to Microdochium patch.

Discover 4turf® products

Individual varieties of 4turf® perennial ryegrass

Extremely drought-tolerant turf that stays green 

4turf® needs less water during a drought. The improved root architecture is more efficient in exploiting the natural water reserves that keeps it green for longer. When the rain returns, 4turf® varieties recover faster. 
In drought trials conducted in France’s Loire Valley and at the RadiMax root screening facility, 4turf® varieties were superior drought-tolerant compared to diploids.


4turf® roots deep roots
4turf® plants have deep roots

Excellent green colour

4turf®’s improved year-round stress-tolerance creates a healthy, turf with better resistance to weed invasion and improved tolerance to disease. Compared to traditional varieties of perennial ryegrass, 4turf® becomes greener sooner, and stays greener for longer.

Exceptional cold-tolerance for year-round green turf 

4turf® has exceptional winter performance. Trials in Finland carried out in a cold and harsh climate proves FABIAN’s superior winter hardiness. 4turf® was also the top performer for general turf quality when tested in independent Scanturf trials. 

Increased salt tolerance

Clean irrigation water is a scarce resource, and even more so in the future. The good news is that 4turf® copes with salinity, no matter where it comes from: salt in the soil, salt spray, or contaminated irrigation water. Our 4turf® turf tetraploid perennial ryegrass varieties are proven to be significantly more salt-tolerant than diploid perennial ryegrasses varieties. You get better plant growth and healthy looking turf. 
DLF offers 4salt® mixtures that perform well in saline conditions. Since these mixtures also perform well where there are no salinity problems, it’s a wise precaution that protects your turf from potential changes in the quality of your irrigation water.


Reduce dog patches and maintenance with 4turf®

4turf® is resistant to dog pee. In public spaces, it is by far the safest and most cost-effective way to reduce dog patches. Pee-resistant 4turf® helps you keep a lush green surface on which dogs and other park users can run and play, while demanding minimum maintenance from your groundsman.

Interested in 4turf®? 

Contact us

4turf® for all professional use

Read more about 4turf® for your sector:


Want to keep up to date with the latest turf news and market trends? Sign up for our newsletter!

Sign up here

About 4turf®

In its original, diploid state, perennial ryegrass has two sets of chromosomes. By using a natural substance, our R&D team have developed tetraploid varieties with four sets of chromosomes. These are our 4turf® varieties.

The route to tetraploidy is long because first-generation plants produce a mixture of diploid and tetraploid shoots within the same plant.
To obtain plants that are 100% tetraploid, we have to go through a series of selections of individual shoots. We count the number of chromosomes on each shoot so we can pick out the tetraploid ones. Since perennial ryegrass is an outbreeding species, a single plant is not enough to create a variety. We need several plants to make a population that avoids inbreeding depression. And we have to prove that our selected tetraploid perennial ryegrass plants perform better than their corresponding diploids.

For more information on the 4turf® story see our 4turf® brochure.