The National Swedish Road Administration sows some 10 million square metres of grass surfaces annually. The choice of plant material is of great importance from the viewpoints of traffic safety, economy and maintenance. During the years 1974-78, roadside sowing trials were carried out with 8 different mixtures and 39 species and varieties of grasses and herbs plus a mixture trial with 15 different mixtures. In evaluating the results, characteristics such as establishment potential, colour, ground cover and plant height were considered. Of the fescues, red fescue (Festuca rubra) is by far the most important species for extensive areas. This species is also clearly superior to all other species included in these trials. Of the bluegrass species, Kentucky bluegrass (Poa pratensis) did relatively well. Colonial bent (Agrostis tenuis) is another important component in a mixture for extensively tended areas. Of the two rapidly establishing species included in the trials wild timothy (Phleum bertolonii) is clearly superior to perennial ryegrass (Lolium perenne). The differences between the 15 different mixtures in the mixture trial are not so striking. The trial results confirm previous experience that the standard mixture for roadsides which has been used up to now gives nearly optimum results. Observations indicate the importance of sowing the sides along a new roadway as soon as possible. This gives the grass a chance to grow tough, making it less attractive to wildlife when the road is opened for traffic. (TRRL)

  • Corporate Authors:

    Swedish National Road Administration

    Fack S-10220
    Stockholm 12,   Sweden 
  • Publication Date: 1980


  • Swedish

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 177 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00330423
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: BP 118 Monograph
  • Files: ITRD, TRIS
  • Created Date: May 21 1981 12:00AM