Lawns
Symptom Cause  
Deters vigor and grass growth with the presence of weeds, that like acidic soil (Crabgrass, moss, shepards purse...)
Acidic Soil (Lawns)
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Green-black fuzzy matted growth on lawn/soil surface
Algae
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Light green, cool-season annual grass, bunch type or "clump" growth habit
Annual Bluegrass (Poa Anna)
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Symptoms are highly variable, appearing yellow-orange in color, irregular patterns small freckle-like spots on leaves, occurs in irregular patches or circular patches up to 1in. in size
Anthracnose (on Lawns)
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Ant Mounds appear on lawn and kill grass
Ants
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Small round bare or severely stunted areas that rapidly increase in size. Caterpillars are 1-2 inches in length. Appear in lawn in fall
Armyworms
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Small circular patterns that turn yellowish and brown, roots eaten by larvae causing loose sod, mid June to late July
Billbugs
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Vining habit, with extensive root system, very persistence, arrowhead-shaped leaves shades out lawn, flowers are white to pink
Bindweed, Field
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Brown, dying grass in irregular patches, few roots; lawn is easily peeled off soil in severe outbreaks
Black Turfgrass Ataenius Grub
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Tan spots on leaf blades, surrounded by dark-brown halo, patches of affected turf can be from 4in. - 3 ft. in size, inside of patch can recover creating a doughnut effect.
Brown Patch
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Mushrooms emerge through turf
Buried Wood
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May cause damage, lawn burn if overapplied
Chemical spills- Pesticides, gasoline, lime and fertilizers
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Very common in new lawns, sprouts and grows in cool weather, it can form thick mats that crowd out the plants you want. Related to Starweed, Satin Flower, Starwort
Chickweed
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Irregular patches of lawn turn yellowish, then brown and begins dying during hot weather
Chinch Bugs
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Leaves are a three-leaflet, creeping growth habit, has white flowers with bees active around them, grows best in cool weather. Often indicates poor soil, need for fertilizer.
Clover, White
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Thinning and bare spots of turf area with an abundance of weeds, that thrive in compacted soils
Compacted Soil, poor soil conditions, heavy clay soil
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Clump forming summer annual, often has purple stems and can grow to more than 3 feet in height. Smooth crabgrass is usually 15 inches or less.
Crabgrass
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Forms a mat that chokes and shades grass, most prevalent in moist soil and partial shade, but also thrives in sun.
Creeping Charlie
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Grass seedlings in newly seeded lawn disappear, cut off at the base of the grass, circular spots of dead or depressed turf.
Cutworms
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Appears in summer, but grows year-round in warm climates, thrives in low, wet areas
Dallisgrass
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Appears in early spring and continues through summer and fall, or year-round in warm climates, Will adapt height to escape mowing
Dandelion
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Creeps and spreads through lawn to choke it out, killing it. Is a small leafed matting perennial native to the southeastern states
Dichondra
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Light tan spots with reddish-brown borders, that are hour glass shaped on leaf blade, white cobwebby material early in morning. About sliver dollar in size in close-cut turf.
Dollar Spot (on Lawns)
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Rings of dark green and fast-growing turf. Rings can look like diseased turf, a mushroom/fungi growing in ring
Fairy Rings
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1- to 2-inch-diameter spots of lawn turn brown,Fiery skipper larvae eat a variety of grasses, including bent grass, bermuda grass, and St. Augustine they are all warm season grasses
Fiery Skipper
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Usually you don’t see fire ants first; you feel the stings
Fire Ants
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Cats and dogs bring fleas in from outside
Flea
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Brown or tan rings with green centers "frog-eye"
Fusarium Wilt
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Ruins the looks of a uniform winter lawn carpet in warm-season grass lawns; Appears in cool weather, sprouts here and there, but can spread if uncontrolled.
Geranium
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Similar in appearance to Crabgrass, except base of stems are lighter green(whitish) and Goosegrass appears 2 weeks later
Goosegrass
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Irregular brown patches of grass, can pick up turf in clumps do to grass roots have been eaten. Physically seeing grubs in top 1-3inches of soil.
Grubs
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Invades bare or weak areas of lawn, Sprouts in fall and grows during cool season, prefers rich, moist soil and partial shade
Henbit
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Lawn/Turf receives to much or not enough water, can look burnt, footprints remain in grass after some time, curled grass blades.
Improper Watering
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Nutritional deficiency and discoloration of light green or yellow-green, then grass blades start dying at the tips.
Inadequate Fertilization
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Can grow up to 5 feet tall; It has a pale green stem with spreading branches. Leaves are green or purplish, flowers are white or purple with a 5-pointed corolla.
Jimsonweed
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Competitive in moist, rich soil; Invasive species are commonly found along roadsides and on stream banks but also may be present in yards, Common in grass where soil is compacted.
Knotweed, Prostrate
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Insufficient sunlight due to shade, an acid or sour soil (low pH), low soil fertility, heavy or compacted soil or soil conditions that are too wet.
Lawn Moss
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Pale green and stunted grass blades with long, black stripes; distorted grass blades upon close inspection of blades.
Leaf Smut
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Purplish black spots on blades decaying leaf blades/from a distance, diffuse pattern of off color turf
Leaf Spot (Lawns)
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Spreads quickly by seeding, appears in spring and continues till fall, painful if stepped on, often flat and hidden in the grass.
Lettuce, Prickly
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Patches of grass turn brown. Turf can be picked up like a carpet. Loss of roots.
Masked Chafer Larva
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Perennial growing from a rhizome; the stem is very hairy and all parts of the plants produce white liquid latex when broken.
Milkweed, Common
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Areas on lawn turn brown and die, small soil mounds become evident
Mole Crickets
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Form tunnels and/or mounds in lawns that can be unsightly, also disturb plant roots
Moles
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Leaves are grasslike and yellow-green, while the spiky head is purple or yellow. Tiny tubers, or nutlets, form on roots. Triangular stem.
Nutgrass
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Has a waxy coating that protects leaves from spray, step on leaves to crush lightly before spraying; Appears in late winter, mars the even look of winter lawn.
Onion
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Has a shallow taproot, and hairy stems that are 4 to 10 inches tall. Flowers are bright yellow, have five petals, and bloom in early spring.
Oxalis
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Off-colored, prone to wilt, growing poorly or sunken spots in the lawn.
Patch, Summer
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Patches expand turning orange-tan in center with wilted gray-green leaf blades along perimeter of genereally-white in color.
Patch, Take All
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found in moist soil, shade, spreads by seeding appears in spring and continues through summer; common in wet, compacted soil
Plantain, Broadleaf
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Pokeweed grows from the crown of the thick fleshy root, but reproduces only by seed; is a tall, simple perennial herb
Pokeweed
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General Lawn/Turf Damage
Poor Lawn/Turf Damage
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White or gray fuzz on grass looks like mildew
Powdery Mildew
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Makes a mat that chokes lawn, grass starts dying; likes rich soil so it can spread seeds in lawn quickly growing.
Purslane
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Total removal of ragweed is considered impossible, due to the plant's frugality and tremendous seed-producing capability.
Ragweed
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Fine threads on grass blades that appear irregularly shaped or blighted from a distance with reddish or pinkish cast with close inspection, may see 1/4-3/4 inch threads at grass tips, pink in color.
Red Thread
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Brown rings appearing suddenly, grass inside ring remains healthy
Ring Spot Virus
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Orange, brown easy to rub off powdery substance.
Rust (on plants)
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Apreads quickly from seed, wordst in sandy soils; Appears in spring and remains through fall, painful to step on the spiny "bur" or seed.
Sandbur
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Skunks often dig for grubs (the immature life stage of beetles), leaving conical holes 2 to 3 inches across and about as deep.
Skunks
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Small gray or yellow blobs on grass pin-head in size, masses amounts.
Slime Molds
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Gray or pink patches after snow melt circular patches, typically 6-12 inches around.
Snow Molds
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Brown patches up to the size of a baseball in lawns. Leaves and stems chewed off above crown of plant. Silken Tunnels in turfgrass.
Sod Webworms
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Has a shallow taproot, and hairy stems that are 4 to 10 inches tall. Flowers are bright yellow, have five petals, and bloom in early spring.
Sorrel, Wood
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Dainty runners grow into a solid sheet that chokes grass; Clippings scattered by mower root where they land.
Speedwell
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Warm season grasses marks are 6 inches to several feet in size remain dormant till grass starts to green up in spring.
Spring Dead Spot
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Mowing or pulling of this weed is not effective because it grows again from vegetative buds on the roots. Roots can extend into the ground 10 feet. It is a deep-rooted perennial, which means it lives for several years.
Thistle, Canada
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Gray-green spots develop near grass blade tips, later fading to yellow then grayish-white in color.
Tip Burn
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In winter time after snow, paths of dead grass obvious. Nests made in the lawn are networks of shallow burrows in which the voles run in to search for food.
Voles
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Flowers are pinkish in colour and quiet small, but are clustered tightly together in compact cylindrical bunches on the ends of stems; leaves usually have a distinctive brown marking in their center.
Willow Weed
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Extensive system of underground creeping stems; occurs in cool climates and in areas of frequent irrigation.
Yarrow
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Irregular patches or rings up to 3 ft. in size, yellow in color. Symptoms tend to show up October - March.
Yellow Patch
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