You are here

Share page with AddThis

Primo Maxx

Last updated:

Growth Regulator

Authorisation Number: 
Reg. No. L7170 Act No. 36 of 1947
Pack size: 
1 litre and 5 litres
Micro emulsion

The active ingredient in PRIMO MAXX, trinexapac-ethyl, causes a temporary halt to the production of gibberellic acid, a plant growth hormone which is responsible for the top growth of the plant. Trinexapac-ethyl is taken up by the foliage of the grass plant and is translocated systemically to the growing point of the plant. After application the turf grass grows more slowly than in untreated areas, with shorter leaf blades

A micro emulsion selective plant growth regulator which decreases the foliar growth rate of turfgrasses as specified. Making it one of the most effective products for turf care managers and golf course managers alike saving them huge amounts of time in mower frequency and clipping volume. 

Talking Turf are our distributors in South Africa, to buy Syngenta’s revolutionary Plant Growth Regulator for your turf and golf course, click here

Order Syngenta Turf Products

Find out more here:

Primo Maxx SA Fairway Trials

Precautionary Statements

  • Avoid inhaling spray mist Avoid contact with eyes, skin and clothing Wash with soap and water after use Destroy empty container. Do not use for any other purpose Do not feed clippings to livestock or allow animals to graze on treated areas
Personal Protective Equipment
  • Wear suitable protective gloves

Other Restriction of Use

PRIMO MAXX will not slow the growth of weeds in the turfgrass
Do not use application procedures and equipment which will leave untreated strips or large overlaps in the treated area.
There should be ample foliage for spray contact
PRIMO MAXX does not inhibit the formation of grass seedheads.
Apply PRIMO MAXX to actively growing turfgrass.
Avoid applying PRIMO MAXX to turfgrass which is stressed from drought, disease, frost, low fertility, insect or mechanical damage.
In some instances where the turfgrass is not adequately fertilized or is under drought stress, some discolorations may occur. Such discolouration is temporary and will disappear when stress conditions are eliminated.
The turfgrass should not be mowed within 12 hours after the application to allow PRIMO MAXX sufficient time to translocate to the growing point.
The application of nitrogen fertilizers may result in less growth retardation of PRIMO MAXX since the turfgrass will respond to the nitrogen.

Implementation particular terms

PRIMO MAXX may be applied with knapsack sprayers, hand sprayers, boom sprayers and spray-gun application devices.

Water volume

300 – 1000 litres water per hectare


Adapt the pressure for each spray-type.


1 hour

Tank mix lifespan

Immediate use.

Tank mix stability


Type Title Description
To preserve the environment


To minimize yellowing apply readily available nitrogen.Collected clippings must not be composted or used as a mulch.

  • EMERGENCY TEL.: ++27 (0) 8312 33 911


    • Limits vertical grass growth & encourages horizontal & root growth 
    • Reduces the amount of mowing required each week


    • Results in a tighter sward which allows for a better “ball lie” & improved playing surface
    • Significant savings in fuel, machinery parts & wear & tear. Saves time for other operations