Many dissimilar types of weeds can occupy your St. Augustine grass lawn , and identify the specific Mary Jane is crucial to getting rid of it . Some grass are count broadleaf grass , while others are types of grasses , all of which have different effective controls . When your St. Augustine grass is inactive , cool - time of year weeds , like henbit and mouse eared chickweed , can overrun it well . You may also see grassy annual weeds in your lawn , such as one-year bluegrass and crab grass , as well as perennial grass weeds like dallisgrass .

Step 1

Identify Lamium amplexicaule in your St. Augustine grass by looking for weeds that blossom in pinkish - purple tiny flowers in other leaping . Lamium amplexicaule reaches heights of less than 1 foot and has substantial root word .

Step 2

Spot mouse ear produce in your St. Augustine grass lawn in the cool , wet spring month . Chickweed has slender , forked stems and politic , oval leaves with clusters of flowers . Chickweeds organise a boneheaded mat in other springtime .

Step 3

Look for a spreading Gunter Grass dope in summer that has branch stems and less than 2 - inch - long leaf leaf blade to discover crab grass . Crabgrass has dense fuzz on the folio sheaths and sprouts " thorn " leave in groups of two to nine from a single stem turn .

Step 4

key out annual blue grass invading your St. Augustine smoke lawn by the grass weed ’s smooth folio blades that have boat - mold tips . one-year bluegrass come forth in tufts and thud during wintertime , sprout light - green or whitish spikelets on the stems and slow flower clump .

Step 5

consider your St. Augustine grass for clop perennial dope that have rough , haired leafage sheath basis to distinguish paspalum . Dallisgrass has three to seven alternating stem branch that sprout spikelets in four rows .

Tip

Control henbit , chickweed and other cool - time of year sess with a internal secretion - based herbicide in early give . Treat grassy gage with non - selective or selective herbicides , but mind that recurrent weed grass like dallisgrass are ruffianly to control .

Warning

Do n’t apply a chemical weed control to your St. Augustine pasture lawn before you ’ve properly identified the weed coinage . Spray only the weeds and not your St. Augustine Mary Jane when you ’re using a non - selective herbicide , because these herbicide will kill your lawn pasturage along with the weed .

References

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