By Tonya Barnett, (Author of FRESHCUTKY)
It is easy to see why some may be interested to learn more about preventing and controlling unwelcome lawn weeds, such as creeping bentgrass, which can be especially troublesome. Click this article for tips on getting rid of creeping bentgrass.
Some species of bents are commonly used for lawn grass. This is a desirable grass for golf course teeing areas, fairways, and greens.
Bentgrass is used in turf applications for its numerous advantages: it can be mowed to a very short length without damage, it can handle a great amount of foot traffic, it has a shallow root system that is thick and dense allowing it to be seeded and grow rather easily, and it has a pleasing, deep green appearance. The name "bent" refers to the shallow roots, which bend just below the surface of the soil to propagate laterally. [ citation needed ]
Agrostis stolonifera is the most commonly used species of Agrostis. Historically, it was often called Orcheston long grass, after a village on Salisbury Plain, England. It is cultivated almost exclusively on golf courses, especially on putting greens. Creeping bent aggressively produces horizontal stems, called stolons, that run along the soil's surface. These allow creeping bent to form dense stands under conducive conditions and outcompete bunch-type grass and broadleaf weeds. As such, if infested in a home lawn, it can become a troublesome weed problem. The leaves of the bentgrass are long and slender. [ citation needed ] It can quickly take over a home lawn if it is not controlled and has very shallow roots. 
Creeping bentgrass has been genetically engineered to be glyphosate tolerant, as "one of the first wind-pollinated, perennial, and highly outcrossing transgenic crops". In 2003 the Scotts Company planted it as part of a large (about 160 ha) field trial in central Oregon near Madras. In 2004, its pollen was found to have reached wild growing bentgrass populations up to 14 kilometres away. Cross-pollinating Agrostis gigantea was even found at a distance of 21 kilometres.  The grower could not remove all genetically engineered plants and in 2007, the U.S. Department of Agriculture fined the grower $500,000 for non-compliance with regulations in 2007. 
Agrostis capillaris, or colonial bent, was brought to America from Europe. This was the type of grass that was used on the lawns of most estates. It is the tallest of the bents with very fine texture and like most bent grasses grows very densely. Although this species has been used on golf courses and sporting fields it is better suited for lawns. Colonial bent is fairly easy to grow from seeds and fertilization of the lawn is not as intense. This grass also takes longer to establish than creeping bent. However it does not require the intense maintenance. [ citation needed ]
Agrostis canina gets its name for the velvet appearance that this grass produces. It has the finest texture of all the bent grasses. This grass was used in Europe for estate lawns and golf courses because it could be cut so short. Velvet bent grass requires similar upkeep and maintenance to creeping bent. Velvet bent has recently had a resurgence in the UK due to the high demands on greens from inclement weather and speed expectations. This species also has a lighter color than the two previous species. [ citation needed ]
Butterflies whose caterpillars feed on Agrostis include:
Bent grasses are subject to some 50 odd fungus diseases, such as Brown Patch, Snow Mold, and Dollar Spot. These fungus diseases occur more frequently and are of more serious consequences in areas and seasons of hot, humid weather. Close clipping allows air to move freely through the vegetation and will, therefore, reduce the hazard of fungus. The disease-resistant ability of bentgrasses is definitely affected by the balance and availability of plant food nutrients. Healthy, well-fed turf will resist many fungus diseases. Preventive protection, by frequent spraying with a good fungicide, is often the most effective as well as the surest way to maintain disease control. Consult your Lawn fertilizer, representative or a garden supply dealer for definite recommendations.