Lawn Weeds & Weed Control - Picture Guide

Yellow Nutsedge
(Cyperis esculentus)

  • warm season perennial also called
    Nutgrass 
  • most common species are Yellow and Purple Nutsedge 
  • very aggressive tuber (nut or nutlets) root system
  • after one year each tuber can create up
    to 2000 plants and up to 6000 more
    tubers
  • can grow from 6" to 2.5' tall
  • control of this weed is very difficult
  • Recommended Product:  Hi-Yield Nutsedge Control (a selective post emergent herbicide) or Sedgehammer

Barnyard Grass
(Echinochloa crus-galli)

  • warm season annual 
  • fibrous root system
  • can grow 1'-5' tall
  • plant matures in 60 days and can
    produce up to 40.000   seeds
  • reacts to both pre and post emergents

Bindweed
(Convolvulus arvensis)

  • warm season annual 
  • spreads by a deep network of roots and
    rhizomes and  seeds...very invasive
  • one plant can produce 500 seeds that
    are viable for up to 50 years
  • very difficult to control once started
  • may react to pre emergents if started
    early enough
  • Recommended Products: ferti-lome Weed Free Zone or
    Weed Out With Q

Black Medic
(Medicago lupulina)

  • Cool season annual
  • Reproduces by seed
  • Shallow rooted with slender stems
    spreading 12"- 24"
  • occurs in a wide variety of lawn and
    soil conditions
  • has bright yellow flowers in clusters
    of up to 50 flowers
  • reacts to both pre and post emergents
  • Recommended ferti-lome Products: Weed Free Zone, Broadleaf Weed Control with Gallery,
    Weed Out with Q

Crabgrass
(Digitaria spp.)

  • Warm season annual
  • Mat forming
  • Height to 3'
  • Leaves are 1/4" to 1/2" wide and 2"- 6" 
    long
  • Crabgrass can be found in moist, warm
    soils where  lawns are thin or mowed too
    short.

Dandelion
(Taraxicum officinale)

  • cool season perennial
  • reproduces by seeds and root pieces
  • has a long sturdy taproot
  • the flowers are yellow and up to 2" in
    diameter on up to  20" long stems 
  • the flowers ripen to become puffballs
    of seeds from Spring until Fall
  • reacts to some but not all
    pre-emergents and most post
    emergents
  • Recommended ferti-lome Products: Weed Free Zone, Broadleaf Weed Control with Gallery, Weed Out with Q, Hi-Yield Products:  Turflon Ester Ultra, 2, 4-D

Henbit
(Lamium amplexicaule)

  • Cool season annual
  • reproduces by seeds and rooting stems
  • stems droop then turn upright to 16" 
    tall and may root  where they touch the
    ground
  • grows in many different soil types
  • reacts to both pre and post emergents

Knotweed
(Polygonum arenastrum)

  • warm season annual
  • has a taproot to 18"
  • plant is prostrate and mat forming
  • reproduces by seed
  • found mostly in heavy compacted soils
  • reacts to pre and post emergents

Lambsquarters
(Chenopodium album)

  • warm season annual
  • short multi-branched taproot
  • can grow to 5' tall
  • each plant is capable of producing
    thousands of seeds
  • reacts to pre and post emergents 

Pigweed
(Amaranthus spp)

  • warm season annual
  • has a shallow taproot and grows upright
    to 5'
  • reproduces by seed
  • reacts to both pre and post emergents

Plantain
(Plantago major)

  • Cool season perennial
  • reproduces by seed
  • forms an upright or spreading stand of
    broad oval  leaves 8" - 20" tall
  • occurs in damp compacted soils
  • responds to both pre and post
    emergents

Poanna
(Poa annua)

  • Cool season annual
  • has a fibrous root system and can grow
    to 15" tall
  • occurs in wet compacted soils in cooler
    temperatures
  • lacks tolerance to environ extremes
  • apply pre-emergent in early Fall to help
    control this  weed

Prickly Lettuce
(Lactuca serriola)

  • cool and warm season annual 
  • has a deep tap root and can grow to 5' in
    height
  • spreads by seeds 
  • reacts to both pre and post emergents

 

Prostrate Spurge
(Euphorbia supina2)

  • Summer annual
  • reproduces by seed
  • has a central taproot where prostrate
    stems form a mat  up to two feet across
  • found in poor, thin, drought stressed
    soils
  • reacts to pre and post emergents

Quackgrass
(Elytrigia repens)

  • Cool season perennial
  • reproduces by seeds and rhizomes
  • spreads by rhizomes that are 2" - 8" 
    deep
  • can grow to 4' tall
  • resistant to pre-emergent

Witchgrass
(Panicum capillare)

  • warm season annual
  • reproduces by seed
  • can grow 1' - 3' tall
  • prefers disturbed soils areas
  • reacts to pre and post emergents