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Syngenta Growth Regulators

Primo Maxx


1 Gal Bottle

Primo Maxx® plant growth regulator promotes denser, healthier turf that is better able to withstand a variety of stresses including heat, drought, diseases and traffic. It slows the production of gibberellic acid, a plant hormone that promotes cell elongation. Vertical shoot growth is slowed, while lateral and below-ground growth of rhizomes, stolons, tillers and roots is stimulated


Key Features


  • Useful in the management of difficult-to-mow areas and can be used to minimize the need for edging turfgrass

  • Multiple applications will reduce water use and improve drought tolerance

  • Advanced formulation technology ensures it mixes completely with water and does not settle out in a spray tank


Key Benefits


  • Can be applied at rates of 0.1 to 0.2 fl. oz. per 1,000 sq. ft. every 7 to 14 days to suppress basal rot anthracnose. Use the lower rate when seedheads are present.

  • Can be applied to existing turf infested with stands of Poa annua as part of an overseeding/renovation program

  • Pre-stress conditioning

  • It can extend the duration of marking visibility when applied before or with marking agents

Trimmit 2SC


1 Gal Bottle

Trimmit® 2SC Plant Growth Regulator Slows Grass Growth and Suppresses Poa


The active ingredient in Trimmit® 2SC, Paclobutrazol, suppresses Poa annua and is a proven plant growth regulator for managing top growth of turfgrasses.  Use it on established hybrid bermudagrass, bentgrass, bluegrass and perennial ryegrass fairways, tees, and roughs. For growth suppression on established bermudagrass and St. Augustine, it can be used when the grass is green, actively growing and has recovered from dormancy.


Key Features


  • Paclobutrazol, the active ingredient in Trimmit 2SC, inhibits gibberellic acid, the plant hormone responsible for growth by cell elongation

  • Sensitivity of Poa annua to Trimmit allows desirable turfgrasses to crowd out the Poa by slowing its vertical growth within three to 10 days and its competitive ability within one to two weeks


Key Benefits


  • Clippings and the frequency of mowing can be reduced by up to 50% during the effective period

  • Slows grass growth, while enhancing overall turf quality, for up to two months after application

  • Increased turf density and tighter-knit turf improves ball playability on hybrid bermudagrass

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