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St. Augustinegrass

Description

St. Augustinegrass is a warm-season grass with medium density and medium to dark green color. Of all the warm season grasses, it is the least cold tolerant and has the coarsest leaf texture. St. Augustinegrass grows best in warm, humid areas that are not exposed to long periods of cold weather. In fact, its lack of cold tolerance is the major limiting factor in determining its use in North Carolina. Centipedegrass can often be confused with St. Augustinegrass. However, centipedegrass has alternating leaves at the nodes whereas St. Augustinegrass has opposite leaves at the nodes. Centipedegrass also has a more pointed, slenderer leaf blade than St. Augustinegrass. Both leaf blades are V-shaped in cross section, but that of St. Augustinegrass has a more obviously boat-shaped tip.

lawn Maintenance for December - February

Fertilization

Do not apply fertilizer or lime.

Irrigation

Although the lawn will be dormant, water occasionally to prevent excessive dehydration.

Mowing

Pick up debris (rocks, sticks, leaves, etc.) from lawn. Do not try to remove excess debris by burning. This could injure the lawn and is a fire hazard.

Weed Control

Apply broadleaf herbicides to control chickweed, henbit, etc. St. Augustinegrass is sensitive to certain postemergence herbicides like 2,4-D and MSMA, so follow label directions for reducing rates, and use with caution. Selected herbicides like atrazine and simazine can be applied in November or December to control annual bluegrass and several winter annual broadleaf weeds. Read the label and follow directions carefully.

Presentations

Publications

Species Data

Seedhead/Flower

seedhead a thick spike with spikelets imbedded along the sides

p1130800 staugustinegrass
p1130800 staugustinegrass
p1130800 staugustinegrass
seedhead
seedhead
seedhead
seedhead3
seedhead3
seedhead3
seedhead4
seedhead4
seedhead4
Vernation type

leaves folded in the bud

node2
node2
node2
sheath2
sheath2
sheath2
Ligule Type

short fringe of hairs, 0.01 inches (0.3 mm) long

ligule
ligule
ligule
ligulearea2
ligulearea2
ligulearea2
Growth Season/Life Cycle

warm season turf

Auricle type

absent

ligulearea2
ligulearea2
ligulearea2
Leaf blade tip shape

boat shaped; blunt; not hairy

staugustine centipede
staugustine centipede
staugustine centipede
autopsy
autopsy
autopsy
grass
grass
grass
grass4
grass4
grass4
leafarrangement
leafarrangement
leafarrangement
leafblade
leafblade
leafblade
leafbladetip
leafbladetip
leafbladetip
staugustinegrass p1190867
staugustinegrass p1190867
staugustinegrass p1190867
staugustine centipede
staugustine centipede
staugustine centipede
Leaf blade width

0.16 - 0.4 inches (4 - 10 mm) wide

staugustine centipede
staugustine centipede
staugustine centipede
leafarrangement
leafarrangement
leafarrangement
leafblade
leafblade
leafblade
leafbladetip
leafbladetip
leafbladetip
seedhead3
seedhead3
seedhead3
staugustine centipede
staugustine centipede
staugustine centipede
Stolon Presence

present; stout

seedhead4
seedhead4
seedhead4
stolon
stolon
stolon
Rhizome Presence

absent

Collar Type

continuous; not hairy, constricted

collar3
collar3
collar3
ligulearea2
ligulearea2
ligulearea2
sheath2
sheath2
sheath2
Sheath Margin

open; sheath is slightly hairy along edges and toward top

sheath2
sheath2
sheath2

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