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⚠️ Information and Updates Regarding COVID-19's Impact on the College of Agricultural Sciences


Lawn and Garden

Forest and Range


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  • Mow as high as practical during the summer months.
  • Mow often enough so that no more than one-third of the grass blade is removed in a single mowing.
  • Irrigate properly to help reduce annual weed infestation.
  • Fertilize according to the needs of your grass species.
  • Aerate the turf at least once a year to reduce compaction and control thatch.
  • Mulch with organic or inorganic materials to prevent annual weeds.
  • Prune or remove flower heads of weeds to limit seed production in April for winter annual and summer for summer annuals.
  • Remove annual weeds by hand. Hand removal of perennial is seldom effective.
  • Time cultivation based on pulses of weed seed germination and growth and the time of crop emergence.
  • Use propane flame-burners during times of high field moisture.
  • Apply natural and synthetic mulches.
  • Adjust seeding date to allow quicker emergence and a more competitive crop.
  • Plant at the maximum adapted population using seeds with a high germination rate.
  • Quick canopy-forming varieties help the crop competitiveness over weeds within and between rows.


  • Use weed-seed free hay, feed grain, straw and mulch
  • Do not drive vehicles through weed infestations.
  • Manage desirable vegetation to be competitive with weeds.
  • Detect and eradicate new introductions with herbicides.
  • Address large-scale infestations and stop the advancing front.
  • Seed with desirable plants if necessary.
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