Pros and Cons of Natural vs Genetically Modified Seed
From a logistical point of view there are many advantages to genetically modified grass. If you maintain a golf course, for example, then slow growing lawns are likely to save you a lot of time and money. There may also be health benefits; some varieties have been modified so as not to trigger hayfever.
But there are a number of potential ecological problems and many of the questions marks over such breeds have yet to be satisfactorily answered. Creeping bentgrass, a species engineered to be to be herbicide resistant and popular on golf courses, has already been found in the wild and it is possible that the pollen could contaminate other species and spread that resistance. GM grasses may also affect biodiversity by squeezing out other naturally occurring species.
Because grasses take so easily to a variety of habitats and grass pollen can travel many hundreds of meters on the breeze it is far more likely that GM grasses will escape gardens and farms than other GM crops, making them potentially a greater ecological threat.
All natural grass seed, then, may cost more in the long term and require more time and effort to maintain, but using strictly natural species reduces the potential ecological impact of new GM strains. Many of the issues surrounding GM crops have yet to be fully answered and many fears may prove unfounded; however, it is possible that GM grass seeds could cause a range of environmental problems where deployed.