Copyright 2005 North Carolina Association of Nurserymen, Inc.


VCE
   
 
This project was supported by a grant from the Virginia Cooperative Agricultural Pest Survey, Virginia Department of Agriculture and Consumer Services and by the U.S. Department of Agriculture Risk Management Education Program in cooperation with the North Carolina Association of Nurserymen.

 

 
 
 
Weeds of Container Nurseries in the United States
 
Joseph C. Neal, North Carolina State University
Jeffrey F. Derr, Virginia Tech

 
Weed control can be the most costly input in the production of container-grown nursery crops. Any control program begins with correct identification of the weeds present, along with an understanding of their life cycles and modes of reproduction and spread.  Below are the most common weeds of outdoor container nurseries and some recently-introduced species with the potential to spread.  

The species in this bulletin are organized by type, family, and species:   

Primitive, nonvascular plants
       Liverworts (Marchantia)
       Algae (Nostoc)
Monocots, non-grasses
       Doveweed and marsh dayflower (Murdannia spp.)
       Yellow nutsedge (Cyperus esculentus)
       Annual sedge (Cyperus spp.)
Monocots, grasses
       Large crabgrass (Digitaria spp.)
       Goosegrass (Eleusine indica)
       Annual bluegrass (Poa annua)
Dicots (broadleaf plants, by family)
       Apiaceae
          Marsh parsley (Apium leptophyllum)
       Asteraceae (aster family)
          Horseweed (Conyza canadensis)
          Eclipta (Eclipta prostrata)
          Tassel-flower or Cupid’s-shaving-brush (Emilia spp.)
          American burnweed (Erechtites hieraciifolia)
          Thickhead or redflower ragleaf (Crassocephalum crepidioides)
          Dogfennel (Eupatorium capillifolium)
          Galinsoga (Galinsoga spp.)
          Cudweeds (Gnaphalium spp., Pseudognaphalium spp, others)
          British elecampane (Inula britannica)
          Common groundsel (Senecio vulgaris)
          Sowthistle (Sonchus spp.)
          Wild lettuce (Lactuca spp.)
          Asiatic or Oriental hawksbeard (Youngia japonica)
       Brassicaceae (mustard family)
          Bittercress (Cardamine spp.)
          Marsh yellowcress (Rorippa islandica or R. palustris)
          Yellow fieldcress or creeping yellowcress (Rorippa sylvestris)
       Caryophyllaceae
          Common chickweed (Stellaria media)
          Mouseear chickweed (Cerastium vulgatum)
          Pearlwort (Sagina procumbens and S. decumbens)
       Euphorbiaceae (spurge family)
          Garden Spurge (Chamaesyce hirta)
          Spotted and prostrate spurges (Chamaesyce maculata, others)
          Hyssop spurge (Chamaesyce hyssopifolia)
          Nodding spurge (Chamaesyce nutans)
          Petty spurge (Euphorbia peplus)
          Chamberbitter (Phyllanthus urinaria)
          Longstalked phyllanthus (Phyllanthus tenellus)
      Moraceae (mulberry family)
          Mulberry weed or hairy crabweed (Fatoua villosa)
      Onagraceae
          Willowherbs (Epilobium ciliatum and E. hirsutum)
          Water purslane (Ludwigia palustris and others)
      Oxalidaceae (woodsorrel family)
          Woodsorrel or Oxalis (Oxalis corniculata and O. stricta.)
Woody Weeds common in nurseries
          Groundsel tree, Coyote bush (Baccharis halimifolia and others)
          Mulberry (Morus alba, M. rubra)
          Common cottonwood (Populus deltoides)
Preemergence Herbicide Efficacy Rankings
 
 
Virginia IPM | Virginia Cooperative Extension | IPM in the Department of Entomology | Nematode Assay Laboratory | Plant Disease Clinic | Weed Identification Laboratory | Insect Identification Laboratory