About Primazest
“We have grafted to G3 and used Primazest once the grafts had taken. We have a 70 percent canopy and the orchard is looking good.”
— Peter Hope, Katikati, Kiwifruit G3, Grafts
Primazest improves quality & yield in annual crops and soft tissue plants such as cut flowers, vegetables, greenhouse crops and strawberries.
Primazest also supports strong healthy growth in grafted kiwifruit and early season kiwifruit/vineyard growth.
What is Primzest?
An Elicitor of the Phenylpropanoid Pathway
Primazest is a clean, zero-residue spray that helps crops stay healthy and bounce back faster from stress — especially in the early growth stages when they’re most vulnerable.
It’s trusted by growers who want to protect young plants and annual crops without relying on heavy synthetic inputs. Whether you're growing kiwifruit, cut flowers or annual crops, Primazest helps your plants grow stronger, recover faster, and perform better.
Use it on both conventional and organic crops — it’s BioGro certified and safe to apply with no withholding period and no residue.
For Kiwifruit grafts and spring growth: Primazest is specifically formulated to reduce stress from copper application or weather conditions such as frost or high winds and to support energy production during early growth stages.
Case Study: Commercial Gerbera Operation, Auckland
“Primazest has changed the way we grow. After having ongoing pH problems our plants became very sick and Primazest was the only product that was able to bring them back to full health. We have noticed so many benefits since using this product. Longer stem length, larger flowers, brighter colours & healthier plant growth. “
Nicola and Jenna, Gerbera Growers, Auckland.
These photographs were taken before Primazest treatment began in late October and at various stages over the 1st 16 weeks of treatment with Primazest:
26 September. 1 month before Primazest treatment begins
23 October. 3 days before first Primazest application
04 November 1 week after first Primazest application
13 November Week 2 of Primazest treatment
13 November Week 2 of Primazest application
14 February Week 16 of Primazest treatment
14 February Week 16 of Primazest treatment
How Does Primazest Work?
Primazest doesn’t force growth. It works with the plant, not against it.
It activates the plant’s natural production of phenylpropanoids, a powerful group of compounds that help with everything from stress recovery and flavour to colour, cell strength and resilience.
What that means in real terms:
Healthier, more robust growth
Stronger, more resilient cells
Better recovery from damage
Improved overall plant performance
It’s not a hormone. Not a seaweed tonic. And definitely not a fertiliser. It’s a targeted tool to help your plants do what they’re designed to do, only better.
Why use Primazest?
Promotes healthy, early plant growth
Helps plants recover from weather stress (frost, wind, heat or drought)
Reduces damage from sprays like copper in sensitive crops
Supports plant energy production when it matters most.
In kiwifruit, Primazest is especially effective after frost events or copper applications, helping reduce setbacks and support growth momentum right from budburst.
Primazest Reviews
-
Peter Hope, Katikati, Kiwifruit G3, Grafts
"We have grafted to G3 and used Primazest once the grafts had taken. We have a 70 percent canopy and the orchard is looking good.”
-
Nicola and Jenna, Auckland, Gerberas
“Primazest has changed the way we grow. After having ongoing pH problems our plants became very sick and Primazest was the only product that was able to bring them back to full health. We have noticed so many benefits since using this product. Longer stem length, larger flowers, brighter colours & healthier plant growth. “
-
Dave Babington, Katikati, Gold Kiwifruit, Producing Vines
MPI
Primazest is authorised by MPI (under the ACVM Act) as exempt from registration and can be used on all crops with nil withholding and nil waiting period.
ZESPRI
Primazest is included in the Zespri ‘Other Allowed Compounds' (AOC)’ list and can be added to your spray calendar.
ORGANIC
Primazest is certified by BioGro for use in organic production (5943).