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Vegetation Management <br />Method <br />Timing and Location(s) <br />Staff Required <br />Herbicide Spraying <br />Initial application of pre -emergent herbicide should <br />Facilities staff must <br />occur along the trail, trail shoulders, gravel walkways, <br />apply herbicides <br />picnic areas, etc. in late winter or early spring when <br />that require <br />temperatures are forecast to be consistently above <br />application by a <br />freezing and rain is likely within 24-48 hours after <br />licensed herbicide <br />application. <br />applicator. <br />Follow-up spot applications of herbicide should be <br />applied to breakthrough weeds along the trail, trail <br />LRC or Lands <br />shoulders, gravel walkways, picnic areas, etc. in June <br />Specialists can use <br />through early September. Staff should use a dyed <br />un -regulated <br />herbicide when spraying near public areas. <br />herbicides (OTC <br />Selective herbicides may be used in landscaped areas <br />Round -up) <br />(parking lot islands, bioswales, etc.) If necessary. <br />Application should occur between May and September <br />as needed. <br />Hand Pulling <br />Hand pulling is the preferred method for landscaped <br />LRC, Contractor, <br />areas, but if the weed population is large, selective <br />Lands Specialist <br />herbicides may be used. Hand pulling should occur as <br />soon as weeds are spotted. Hand pulling can occur all <br />year, but mostly during growing season (June through <br />September). <br />Mechanical <br />Mechanical methods should be used where weed <br />Facilities or <br />populations cover a large area. Timing and frequency <br />Contractor <br />depends on the weed species. <br />