More Crop Weeds

1. Common Ragweed (Ambrosia artemisiifolia); Sunflower (Asteraceae); Annual
 
annual ragweed
Source:  http://PLANTS.usda.gov/plants/cgi_bin/topics.cgi and http://www.ppws.vt.edu/weedindex.htm
 
 

2.  Purslane (Portulaca oleracea); Purslane (Portulacaeae); Annual
Photo
Photo
http://www.ipm.ucdavis.edu/PMG/weeds_scientific.html
 
 

3.  Yellow nutsedge (Cyperus esculentus); Sedge (Cyperaceae); Perennial
 
Source:  http://www.agf.gov.bc.ca/croplive/cropprot/weedguid/weedguid.htm
 
 

4.  Quackgrass (Elytrigia repens); Grass (Poaceae); Perennial
Source:  http://www.agf.gov.bc.ca/croplive/cropprot/weedguid/weedguid.htm
 
 

5.  Large crabgrass (Digitaria sanguinalis); Grass (Poaceae); Annual
Photo
Source:  http://www.css.orst.edu/weeds/id.html and http://www.ipm.ucdavis.edu/PMG/weeds_scientific.html
 
 

6.  Hairy nightshade (Solanum sarrachoides); Nightshade (Solanaceae); Annual
Source:  http://www.agf.gov.bc.ca/croplive/cropprot/weedguid/weedguid.htm