What kind of weeds do you have?
Weeds are classified into three main groups and the kind you have may determine how hard you will have to work to eradicate them.
Garden variety weed
– The Weed Science Society of America defines a weed as a plant that causes economic losses or ecological damage, creates health problems for humans or animals or is undesirable where it is growing. These weeds include crabgrass ( Digitaria), giant foxtail ( Setaria faberii) and common lambsquarters ( Chenopodium album).
– These are designated as injurious to public health, agriculture, recreation, wildlife or property. They may be quarantined to control their spread, or action may be taken to destroy them. These weeds include purple loosestrife ( Lythrum salicaria) hydrilla ( Hydrilla verticillata) witchweed ( Striga spp.).
– With the ability to establish themselves, persist and spread widely, these weeds affect natural ecosystems outside of the plant’s native range. Once established in a foreign locale, these invaders are difficult to control as they often lack natural enemies to curtail their growth. These weeds include treeof-heaven ( Ailanthus altissima), saltcedar/ tamarisk ( Tamarix ramosissima) downy brome/cheatgrass ( Bromus tectorum).