St. Augustine
grasses are native to the Gulf of Mexico region, the West Indies and Western
Africa. St. Augustine is commonly found in coastal areas from Florida
to California and tends to flourish in areas of high heat, sunlight and
filtered shade. St. Augustine grasses tolerate a wide range of soil types.
St. Augustine grasses have a medium to coarse texture and a dark-green
to bluish-green appearance.
Floratam St. Augustine
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Floratam St. Augustine grass was released in the early 1970s by the
Florida and Texas Agricultural Experiment Stations as a SAD virus
and chinchbug resistant turfgrass (hence the name FLORada and TexasAM).
Floratam is a vigorous, coarse textured St. Augustine grass variety.
Stolons of Floratam are large, purplish-red in color with internodes
averaging 3" in length. Leaf blades are wider and longer than
common St. Augustine grass. Tests at A&M Univesity concluded it
is the most drought-tolerant of all St. Augustine grasses. Floratam
is not as cold tolerant as common St. Augustine, so preconditioning
by use of Winterizer fertilizer (3-1-2 or 4-1-2 ratio) in the fall
(October) is critical. Floratam may suffer freeze damage when temperatures
fall below freezing for extended periods. |
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Raleigh
St. Augustine
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Raleigh St.
Augustine grass,
which is a cold-hardy St. Augustine grass cultivar, was first discovered
on a lawn in Raleigh North Carolina and released to the public by
North Carolina State University in 1980. It has a medium green color
with a coarse texture. It is susceptible to chinch bugs, but this
variety of St. Augustine grass is tolerant to lower temperatures.
Unlike Floratam, it is susceptible to brown patch disease. During
peak summertime heat, Raleigh has been noted to yellow and not grow
as aggressively as during cooler temperatures. Supplemental iron
applications can reduce this yellowing tendency.
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