Common Hemp-nettle
Galeopsis tetrahit L.
Plant family: Lamiaceae 
Biologic group: Summer annual

Knottgrass
Polygonum aviculare L.
Plant family: Polygonaceae 
Biologic group: Summer annual

Fat-hen
Chenopodium album L.
Plant family: Chenopodiaceae 
Biologic group: Summer annual

Pineapple-weed
Lepidotheca suaveolens (Pursh) Nutt.
Plant family: Asteraceae 
Biologic group: Summer annual

Field Pancy
Viola arvensis Murray
Plant family: Violaceae 
Biologic group: Summer annual