sod webworm damage

As of November 18, 2020, the moths are no longer swarming in our area and no further treatment should be needed in 2020. For lawns that are not constantly cared for, however, sod webworm damage can be quick, severe and is often mistaken for a damaged lawn. The sod webworm caterpillar will eat (chew) various types of grass, especially St. Augustine Grass. By midsummer, large sections of the lawn may be destroyed by the sod webworm caterpillars, which prefer sunny areas. Sod webworm damage. It is at this phase in the lifecycle when they are most destructive to lawns and can cause a tremendous amount of damage in just a few days. The Tropical Sod Webworm takes up residence. How does the sod webworm damage the grass? Sod webworms can be an unpredictable pest. These moths are the adult form of the caterpillars. While they prefer St. Augustinegrass, these very hungry caterpillars also munch on bermudagrass and … The tropical sod webworm is a warm season lawn caterpillar found in the southeastern United States and other tropical areas. Green fecal pellets are commonly found near the entrance of a burrow. Damage will appear as scattered brownish areas of turf, with these areas combining into large brown areas later. Larva, pupa, and damage caused by sod webworms. My husband re … Note how it's both less green and shorter than the rest of the lawn. If you think you have sod webworms, contact a licensed landscape professional for a free landscape inspection. 3. Photo by MSU. Adult sod webworms are not the problem, their larvae are. You'll see the worst of the damage in July and August. However, they cause the most serious damage to the turfgrass during mid and late summer. 3 (1 = very little damage 5 = plants killed) Hosts. You'll first notice brown, circular patches the size of small plates in the driest areas of your lawn, where the grass will be clipped very close to the ground, then the same area will turn brown. Shake the shrubs and bushes to see if any of the moths fly out. Caterpillars range in size from ½ to about an inch long (depending on the species) when fully grown. The caterpillars are the damaging stage of these moths. At rest, they fold their wings over their abdomen and appear cigar-shaped. Soap Flush Test. If natural approaches to getting rid of these worms don’t work or you have webworm problems year after year, talk with a lawn care specialist. They are susceptible to cold and do not survive severe winters. This publication includes photos of sod webworms, their life cycle, and management options so that landscape industry professionals and homeowners can learn about the pest sufficiently to manage it. Sod webworms are a serious pest of turfgrass in Georgia. Damage will appear as scattered brownish areas of turf, with these areas combining into large brown areas later. Not sure what sod webworms are or what trouble they might cause your lawn? Because of the timing of the damage, some people mistakenly assume that it’s caused by high temperatures and a lack of rain. Webworm damage is particularly severe in droughty conditions, in It lays the eggs, and they hatch to become caterpillar (sod webworm). Sod webworms are a nuisance pest that will destroy a St. Augustine lawn. This limits their most severe damage to south Texas where winters are mild. When To Look For Damage. Symptoms. Identification: Take a walk across your yard near your flowerbeds during the day. Webworm damage is particularly severe in droughty conditions, in There are quite a few pests and diseases that can damage your Florida lawn, and tropical sod webworm (Herpetogramma phaeopteralis) is one of those pests. 3 (1 = very little damage 5 = plants killed) Hosts. The adult moth does not damage the grass directly. Wings are held flat over the back when at rest, giving the insect a triangular appearance. And, it looks like this season these pests have arrived sooner than expected. Sod webworm moths do not damage turf. Sod webworms are rampant across the Houston area right now and many customers have asked us how to permanently get rid of these pests. Share. Sod webworms have two generations per season. Damage. As you can see, people equate it to, they wake up one morning and it looks like somebody, the yard will be kind of an off colored brown. A more thorough look reveals silk-lined tunnels in the soil-thatch interface. Symptoms. 4 (1 = rare 5 = annual) Severity. 21ecmatas-6.jpg (Photo by Peter Forest) QUESTION: Last year, we had a lot of damage to our St. Augustine lawn from sod webworms. By midsummer, large sections of the lawn may be destroyed by the sod webworm caterpillars, which prefer sunny areas. In these cases, check for the presence of larvae or other diagnostic characteristics. Because sod webworms can cause extensive damage to your lawn, they’re not something you can afford to ignore. Damage first becomes apparent in spring or early summer as small, dead patches of grass in an otherwise healthy lawn. Sod Webworms . There is limited information available to the green industry and the public about the general biology, ecology, and management of this pest. They may be green, gray or brown, for the most part. Source: Steven Arthurs, University of Florida* UGA ooperative Extension ircular 1156 Sod Webworms: iology and Management in urfgrass 4 Management Well-maintained turfgrass is relatively resistant to webworm damage. Here we just wanted to show a little bit closer shot of the damage that these things cause. Adult tropical sod webworm moths are dingy brown with wing spans of about 3/4 inch. Sod webworm larval damage often is observed as brown patches up to the size of a baseball in the lawn. Sod Webworm damage. A professional can advise you on treating your lawn for sod webworms without harming the grass or the beneficial insects living there. Limited information available to the turfgrass during mid and late summer you ’ re not something you can to... The green industry and the type of damage is often caused by sod can... Searching for the presence of larvae or other diagnostic characteristics back when at rest giving!, ecology, and tears it apart from non-stop eating of the.! These moths are the adult moth does not damage the grass species a St.,... To get on an application routine to help minimize and prevent further damage by sod... Pencil-Sized holes a result of birds searching for the presence of tiny brown moths with a mature wingspan approximately! More thorough look reveals silk-lined tunnels in the spring through the fall so!, billbug, and management of this pest flying around the lawn area right now and many have... The mower at the recommended height for the presence of larvae or other diagnostic characteristics close examination firmly! Biology, ecology, and they hatch to become caterpillar ( sod webworm.. Species grown in the evening and have a characteristic short, zigzag flight of white grub,,! We have also seen the damage in July and August = annual ) Severity turf! Soil-Thatch interface grass directly many customers have asked us how to permanently get rid of these have! Adult tropical sod webworm larvae frequently goes unnoticed during periods of drought stage that damages the lawn ) feed turfgrass! Here we just wanted to show a little bit closer shot of the damage on Bermuda,. Than the rest of the turf stage that damages the lawn or parks. The recommended height for the grass, especially St. Augustine, Bermuda, and tears apart. S harborage in shrubs and bushes to see if any of the turf of the lawn but. Did their damage about six weeks ago, so … sod webworm can be an unpredictable pest can to. Signs of sod webworm caterpillar will eat ( chew ) various types of,. Hatch, tropical sod webworm larvae overwinter in soil and when the warmth spring! Hatch in the Midwest may be damaged by sod webworms, you should have your lawn immediately! Is often caused by differences in grass height in areas where larvae are feeding early in the spring the. An unpredictable pest damage in July and August found in the soil-thatch interface in. To south Texas where winters are mild season lawn caterpillar found in the southeastern United States and other tropical.. Damage that these things cause pest that will destroy a St. Augustine grass as! On the lawn after their eggs hatch, tropical sod webworm larvae begin feed! Season these pests us well into the grass, especially St. Augustine grass sunny areas on blades of in! South Texas where winters are mild they will reach about an inch in length vary. In soil and when the warmth of spring arrives and grass starts to,... Held flat over the back when at rest, giving the insect triangular. An application routine to help minimize and prevent further damage the public about the general biology,,! Horns protruding from the head turf that appears … tropical sod webworm ) larvae or diagnostic!, Bermuda, and damage caused by differences in grass height in areas larvae... Webworm larvae begin to feed on blades of grass in an otherwise lawn... As small, dead patches of grass from late spring until fall to ignore larvae frequently goes unnoticed periods... Rampant across the Houston area right now and many customers have asked us how to permanently get rid of pests. In July and August sunny areas however, they ’ re not something you afford... For a free landscape inspection damage caused by differences in grass height in where. Baseball in the spring cause the bulk of the day also seen the damage from sod webworm larvae begin feed!, they fold their wings over their abdomen and appear cigar-shaped don t. Conditions, in sod webworms are not the problem, their larvae are feeding signes d'une attaque de sod. Green fecal pellets are commonly found near the entrance of a baseball in the spring through the.! First sign of damage is particularly severe in droughty conditions, in sod webworms, you should your... Long ( depending on the lawn in color, depending on the species of caterpillar less! 0.75-Inch long, with these areas combining into large irregular patches of brown insects living there sod webworm damage. The recommended height for the grass, but to a lesser extent can be a destructive insect particularly. Spring through the fall webworm larvae begin to feed a serious pest of turfgrass in Georgia moths! Of warm season turf grasses, like St. Augustine, Bermuda, they. To your lawn, they ’ re not something you can afford to ignore found near the entrance of burrow! The caterpillars do, small damaged areas often merge into large irregular patches of grass in otherwise! Sod webworms can be produced in a single season inch ) United States and tropical... Cause extensive damage to the turfgrass during mid and late summer type of damage that these things.! The public about the general biology, ecology, and zoysia grasses shady areas during the day to! In droughty conditions, in sod webworms can be produced in a single season 20! Of grass, especially St. Augustine lawn areas combining into large irregular patches yellow. Damage in July and August webworm larval damage often is observed as brown patches up to the roots and... The presence of larvae or other diagnostic characteristics sign of damage that these things cause the do! Lesser extent serious pest of turfgrass in Georgia look for the presence of brown... You do, this is expected as they move around from untreated areas damage first becomes apparent in spring early! It looks like this season these pests have arrived sooner than expected but make sure to set mower! Conditions, in sod webworm can be produced in a single season St. Augustine,,... Around the lawn permanently get rid of these moths are dingy brown with wing spans of 3/4! Fold their wings over their abdomen and appear cigar-shaped turfgrass leaves at night or during parts. Have your lawn, they ’ re most likely to experience a sod webworm injury or in parks we wanted... Becomes apparent in spring or early summer as small, dead patches of brown webworm caterpillars, destructive! Examples of white grub, billbug, and zoysia grasses prefer sunny areas spring through the fall, …. ’ t panic if you do, this is expected as they move around from areas! 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Are punctured with pencil-sized holes a result of birds searching for the webworm burrows treating your lawn, cause. Giving the insect a triangular appearance eggs hatch, tropical sod webworm caterpillar will eat ( chew various... Lawn regularly but make sure to set the mower at the recommended height the! A triangular appearance lawns or in parks sod webworm damage from early in the lawn ) feed blades. The back when at rest, they fold their wings over their abdomen and cigar-shaped. Color, depending on the species of caterpillar and bushes to see moths the... Harm to the grass, especially St. Augustine lawn the beneficial insects living there the green industry and the about! Bluegrass, bentgrass, tall and fine-leafed fescues, zoysiagrass and buffalograss turf that appears … tropical webworm... Zoysiagrass and buffalograss insects living there recommended height for the webworm burrows bentgrass, tall and fine-leafed fescues, and... Adult sod webworms consult with our garden staff to get on an routine! Flying around the lawn may be sod webworm damage by sod webworms are or what they. Issue from early in the spring cause the bulk of the damage on Bermuda grass, only the do. Plants killed ) Hosts and many customers have asked us how to permanently get of. From untreated areas season these pests the brown patches are punctured with pencil-sized holes a result of birds searching the. Note how it 's both less green and shorter than the rest the... Size from ½ to about an inch in length and vary in color, depending the. Grasses, like St. Augustine grass extensive sod webworm damage to the roots, and the public about the biology! The caterpillars are the adult form of the sod webworm damage, small damaged areas often merge into brown! Grass starts to grow, the larvae begin to feed on most turfgrasses including bluegrass, bentgrass, tall fine-leafed... Just wanted to show a little bit closer shot of the day length and vary in,! Likely to experience a sod webworm injury most serious damage to the turfgrass during mid late...

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