<p>Creeping stolons spread rapidly&#xa0;and may be as long as 20 m, but are generally 0.5-1.5 m. Culms are numerous (8-40), usually prostrate but flowering culms can be erect or geniculated, and may be 10-90 cm high. Leaf blades are blue green, 2-20 cm long, and 2-6 mm wide, smooth on the lower surface and somewhat pubescent at the upper one. The inflorescence consists of 4-6 spikes spread out in a star-shaped arrangement, with purplish colour when young, fading as the spikelets mature and dry.</p><p>Many varieties and hybrids have been developed for different cultivation conditions.</p> mattovarvasheinä true varvasheinä <p>Bermuda grass is a very competitive species and considered a weed in more than 80 countries, being a threat to many crops such as maize, cotton and sugarcane, vineyards and plantation crops. It is difficult to eradicate from arable land, so it should not be used in temporary pastures. </p> <p>Bermuda grass is common in grasslands, lawns and pastures, roadsides, sea-coast sandy dunes. It does well on overgrazed and trampled areas. It thrives in areas where average annual temperatures range within 17-35°C. Bermuda grass requires 625-1750 mm&#xa0;annual rainfall, but moisture levels as low as 550 mm and as high as 4300 mm are acceptable. Because of its deep rhizome, Bermuda grass is tolerant of both dry and flooding conditions.Though Bermuda grass prefers deep, well-drained fertile soils, it can adapt to a wide range of soils including those that are relatively infertile, with a pH ranging from 4.3 to 8.4 (optimum > 5.5). It responds positively to N and K fertilization. It has some saline soil tolerance (but none for aluminium). Bermuda grass is sensitive to shade and may die under medium and dense shade. </p> <p>A perennial grass that spreads via above ground stolons and below ground rhizomes. Forms dense and extensive turf-like mats, 10-40 cm high.</p> Cynodon dactylon (L.) Pers. <p><b>Keywords:</b></p><p>Weed, ornamental (lawn grass), erosion control, fodder, Poaceae. </p> hundtandsgräs <p>Due to its dense mat-forming habit, <i>Cynodon dactylon</i> is primarily used as a lawn grass in recreational areas, but also in erosion control and soil stabilization efforts. As a fodder grass it is one of the most grazing-resistant grasses and can withstand heavy grazing once established.</p> <p>Native to Africa and Asia. Introduced to all tropical and subtropical areas.</p>