According to this summary, some non-native turfgrass species can be highly invasive, such as those that appear to be spreading in Oregon's Willamette Valley. Just thought some of you would be interested in hearing about this. Any opinions expressed are strictly my own, rather than official positions of the U.S. Geological Survey. Much of this information comes from Diversity, a News Journal for the International Genetic Resources Community, Volume 16, Nos. The size of the turfgrass seed industry is second only to that of hybrid seed corn.
Agrostis species are notorious for hybridizing freely.
As of the article date, no research had been published on possible interspecific hybridization with native Agrostis species. We know little of the potential risks from the sale and large-scale seed production of such altered crops. Transgenic creeping bentgrass may be the tip of the iceberg. Other species, known for their weediness in natural areas are sure to come.