
Syngenta - Bonzi Plant Growth Regulator
Brand: Syngenta
Bonzi Plant Growth Regulator
Bonzi is a paclobutrazol plant growth regulator for ornamental plants grown in containers in nurseries, greenhouses, shadehouses and interiorscapes. It reduces internode elongation to keep plants uniformly compact and strong, maintaining the plant-to-pot size ratio with deeper green foliage.
Bonzi can be applied as a foliar spray, a media drench or a pre-plant bulb soak, giving growers flexible height control on bedding plants, bulb crops, annuals, perennials and herbaceous and woody ornamentals. Compact plants ship with less breakage and have an extended shelf life.
Available Options
- 1 Qt
- 2.5 Gal
Key Features
- Active ingredient: paclobutrazol 0.4% (4,000 ppm)
- Reduces internode stretch for uniformly compact, strong plants
- Deeper green foliage and a balanced plant-to-pot ratio
- Spray, drench or pre-plant bulb soak applications
- Less breakage in transport and enhanced shelf life
- Restricted-entry interval (REI) of 12 hours; signal word Caution
- EPA Reg. No. 100-996
- Always read and follow label directions.
Ideal Applications
- Bedding plants, annuals and perennials
- Bulb crops and pot chrysanthemums, poinsettias and geraniums
- Herbaceous and woody ornamentals in containers
- Nurseries, greenhouses, shadehouses and interiorscapes
Choose options

Registration & safety
- EPA RegisteredReg. No. 100-996
- Prop 65California warning
WARNING: This product can expose you to chemicals including Crystalline silica (cristobalite), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
- EPA Reg. No.
- 100-996
- EPA status
- Active, per EPA's registry
- EPA Est. No.
- 70815-GA-001
- Registrant
- Syngenta Crop Protection, LLC
- Type
- Plant Growth Regulator
- Active ingredient
- Paclobutrazol 0.4%
- Signal word
- Caution
- Shipping hazard
- UN3082 · Class 9