Late winter/Spring Weed Control Program
Month February July Week 5 6 7 8 9 10 11 12 13 14 15 16 17 18 192021 222324252627282930 March April May June
Priority Explanation
Specticle ®2 FLO 6 fl. oz./A or Echelon ® 24 fl. oz./A 3 or Ronstar on Fertilizer 2-3 lb. ai./A Apply 90 days after previous application
Ronstar ® FLO 81-122 fl. oz./A (2-3 lb ai/A) or Ronstar 1 on Fertilizer 2-3 lb ai/A
Control through August
Specticle FLO 2 4.5 fl. oz./A Apply 90 days after initial application
For Ronstar-resistant goosegrass sites Control through August
Specticle FLO 2 4.5 fl. oz./A
Turf grown in soil exceeding 80% sand
Specticle FLO 2 2-3 fl. oz./A Apply every 45-60 days and consider rotating PRE and POST herbicides with other modes of action for resistant management.
Ronstar FLO 81-122 fl. oz./A (2-3 lb ai/A) or Ronstar 1 on Fertilizer 2-3 lb ai/A
Specticle FLO 2 3 fl. oz./A Apply 90 days after previous application
Control through August
For Ronstar-resistant goosegrass sites Control through August
Specticle FLO 2 2-3 fl. oz./A, apply every 30-45 days after initial application and consider rotating PRE and POST herbicides with other modes of action for resistant management.
Specticle FLO 2 3 fl. oz./A
¹Spread rate should be minimum of 250 lbs of fertilizer per acre for regular granule size and 200 lbs per acre for mini granule size. ²Do not apply if turf injury is present and assess turf quality before each application. 3 Avoid applications of Echelon to zoysiagrass during periods of transition. For improved efficacy apply an additional 12 fl. oz./A 60-90 days later
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June 2025
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