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Growth Regulator

Authorisation Number: 
Mode of action: 
Systemic contact Foliar and Root Uptake

Legal warning

Re-entry Period

  • Don’t enter or allow worker entry into treated areas for 12 hours

Hazard Statements

  • HAZARDS TO HUMANS AND DOMESTIC ANIMALS When used as directed this product does not present a hazard to humans or domestic animals
  • Harmful if absorbed through skin. Avoid contact with eyes, skin, or clothing.
  • Harmful if inhaled or absorbed through the skin. Avoid contact with skin, eyes, or clothing. Avoid breathing dust. Prolonged or frequently repeated skin contact may cause allergic reactions in some individuals.

Precautionary Statements

  • • Like all chemical substances, avoid the exposure to the pesticide spray. • Masks should be used to cover the nose and mouth during spraying. • Eye visors should be worn when spraying upwards, or in treated areas. • Do not apply directly on food. • Avoid applying the pesticide over rivers or water inhabited by fish. • The disposal of the excess pesticide spray mixture should be in accordance with the approved procedures agreed upon, and in the areas specified for this issue.
Personal Protective Equipment
  • Wear proper personal protective equipment, refer to label for further instruction.

Other Restriction of Use


Tank mixing

Refer to Label for further instruction

Tank mix preparation

Make sure the sprayer is clean and set to give an even application at the correct volume and an even deposit.

Implementation particular terms

Always use constant agitation of the sprayer tank during mixing, transportation and application.

Mixing and spraying

• Add half of the required water to the sprayer.
• Add the required amount of Bonzi and then the remaining water and begin agitation.
• Thoroughly wash all spraying equipment immediately after use.
• The diluted product must be used on the day of mixing.
• Maintain vigorous agitation in the spray tank before and during the application.
• This will ensure a well-mixed spray suspension.
• Do not allow spray suspension to dry in the tank.
• Thoroughly clean the sprayer after use by flushing the system with water containing a detergent.
• Refer to the Pesticide Disposal section of this label for waste disposal.

Water volume

Refer to Label for Further instruction


Adapt the pressure for each spray-type.


1 hour

Tank mix lifespan

Immediate use.

Tank mix stability


Rate of Usage


PPE required for Early-Entry Workers

Chemical-resistant gloves made of any waterproof material, such as barrier laminate, butyl rubber, nitrile rubber, neoprene rubber, polyvinyl chloride or viton.
Shoes plus socks.

  • In case of toxic or transport emergency ring +44 (0) 1484 538444 anytime (24hr)

  • Bonzi® contains the active ingredient paclobutrazol. Paclobutrazol is a systemic growth regulator which acts by reducing gibberellic acid production – the plant hormone responsible for cell elongation (upward growth). Shrub vigor is therefore controlled by reducing internodal lengths of new shoots and earlier formation of terminal buds.


    • Fully branched, condensed and autonomous plants
    • More homogeneous and distributed budding
    • Controlled growth
    • Better marketing schemes


    • Reducing pruning frequency of ornamental shrubs
    • Enhances the appearance of ornamental shrubs
    • Increases the chlorophyll content of leaves – greener colour
    • Improves disease and drought tolerance