St. Augustine grass is a type of turf that does well in warm , coastal climates with mild winter temperatures . Although it can grow in many types of moist or wet soils , St. Augustine weed requires temperate criminal maintenance including mow , fertilization and passable watering to prevent against pestilence and weeds . accord to the University of Florida , " Since the fifties , Atrazine has been the stock post - emergence weed killer for broadleaf weed control in St. Augustinegrass sward . "

History

Atrazine became the most pop post - emergence herbicide for St. Augustine grass in the 1950s . Research at the University of Florida produced evidence that the weed killer was an effective selective gage control of both broadleaf and grassy smoke in warm - time of year grasses .

Weed Types

Broadleaf weeds are a type of perennial Mary Jane find in St. Augustine grass ; broadleaf weeds are typically controlled with a post - emergence herbicide . Grassy sess are generally harder to identify , but this is not the case with St. Augustine grass . Because of the difficulty of remove grassy weeds in St. Augustine Gunter Grass , pre - emergence grass control is recommend .

Application

Pre - emergence ascendancy should be applied in the spring to control summertime sess , and in early October to control wintertime weed . Post - emergence applications programme can be used selectively on weeds invade lawns . Atrazine can be used as either a pre- or post - emergence herbicide , but caveat should be remove not to utilise this weed killer in extreme weather temperatures . apply such a solid weed killer in the late summertime heat can be damaging to the grass and surrounding flora .

Dangers

Although St. Augustine grass is unique in that it is not harmed by atrazine , there are some dangers in using this herbicide . Atrazine can damage other type of flora , include grasses found in the same climate as St. Augustine . Also , atrazine is H2O - soluble and has been found to leak out into groundwater supply .

Maintenance

St. Augustine grass can also be protected against widow’s weeds by frequent mowing as most dope can not tolerate it . This is particularly honest for St. Augustine sess ; mowing St. Augustine eatage at a high setting can keep Bermuda grass from mature .

References

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