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Kiwifruit's most unwanted

Kiwifruit's most unwanted

There are eight organisms identified as the biggest biosecurity threat to New Zealand's kiwifruit industry.

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 Kiwifruit's most unwanted

Kiwifruit's most unwanted

Brown Marmorated Stink Bug

The Brown Marmorated Stink Bug (BMSB) is the kiwifruit industry’s second-most unwanted biosecurity threat after fruit flies; and the risk of it entering New Zealand is considered extreme.

The BMSB is able to hitchhike on inanimate objects such as cars and shipping containers. If it were to enter New Zealand it would have no problem establishing due to New Zealand’s highly suitable climate and abundance of host material. Its entry and establishment would result in significant production impacts to many horticultural industries.

The high risk and potential consequence of BMSB have made it a priority for biosecurity readiness activities for both KVH and the Ministry for Primary Industries (MPI).

Threat Levels
Likelihood of entry
High
Likelihood of establishment
Medium
Production impacts
High
Market access impacts
Very Low

Pest ranking based on the KVH risk matrix

View risk matrix

BMSB preparedness

KVH is working with Zespri, MPI and the wider kiwifruit industry to ensure we are all prepared for BMSB, if it were to arrive and establish here. This includes running regular simulation exercises, hosting workshops, and developing joint workplans for how we would manage an incursion and long term response.

Read the BMSB Readiness Plan (A) for information about how the industry is ready for a New Zealand incursion. Read the BMSB Readiness Plan (B) for information about long term management considerations should BMSB establish in New Zealand.

Read the BMSB kiwifruit growers guide to long-term management. The guide outlines all the things growers should do on-orchard and how to do them when managing BMSB long-term.

In August 2018 the New Zealand horticulture industry welcomed the Environmental Protection Authority’s (EPA) decision allowing the release of a tiny Samurai Wasp into New Zealand, if ever there was an incursion of the BMSB. Read the media release here.

KVH and Zespri have recently designed a useful infographic tool for growers. It encourages growers to cast their eye into a possible future where BMSB has arrived in New Zealand and all response/eradication efforts have failed. What long-term management of the bug might look like on-orchard; factors to consider into future planning; and the times of the year each is most appropriate, is summarised in the infographic here.


BMSB photos and videos


BMSB reference material

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LATEST NEWS

09 Sep 2026

High-risk season is here – order your pest ID ring cards now

With spring bringing increased biosecurity risk for some of our most unwanted threats, now is the perfect time to make sure pest identification resources are close at hand. KVH's handy pest ID ring cards feature key pests and diseases of biosecurity concern to the kiwifruit industry and are ideal for orchard staff, contractors and visitors. Order your free set today and we'll send them straight out to you, helping everyone on orchard know what to look for and what to report if something unusual is found. Order now and be prepared for the season ahead.

Read more about High-risk season is here – order your pest ID ring cards now

09 Sep 2026

USA steps up fight against Spotted Lanternfly

A group of USA lawmakers is pushing for the Spotted Lanternfly (SLF) to be officially recognised as an invasive species, highlighting the significant risk it poses to the country’s agricultural sector. The proposed legislation identifies SLF as a priority biosecurity issue and calls for increased investment in research and management to support long-term control and mitigation. The move reflects growing concern about the pest's impact on agriculture, particularly vineyards. In New York alone, the grape industry could lose more than US$14 million within the first three years of an infestation if the pest isn't effectively controlled. For New Zealand kiwifruit growers, it's a timely reminder of why SLF remains on KVH's Kiwifruit's Most Unwanted list. While it is not present here, its rapid spread and economic impacts overseas highlight the importance of keeping it out. The threat continues to grow internationally, with the first European detection recently reported in Moldova. Although the initial infestation was thought to have been eradicated, isolated populations were later found outside the original area. The increasing political attention and investment in managing SLF overseas reinforces an important biosecurity message: preventing high-risk pests from entering New Zealand is far more effective and affordable than managing them once established.

Read more about USA steps up fight against Spotted Lanternfly

09 Sep 2026

Young growers put biosecurity skills to the test

Image: James Blair, 2026 Young Grower of the Year, during his biosecurity module at the national competition in Cromwell. This year, KVH continued its support of horticulture’s emerging leaders by becoming a silver sponsor of the Young Grower of the Year national final in Cromwell, delivering a biosecurity module at the event. Despite heavy rain on the day, the weather did little to dampen the enthusiasm of the competitors. Regional finalists put their practical skills and knowledge to the test across a broad range of horticultural topics. The KVH module challenged competitors to demonstrate their understanding of how the multiple layers of New Zealand’s biosecurity system work together to protect our primary industries. They were also tested on their ability to recognise key pests and biosecurity risks in the workplace and to apply practical biosecurity measures relevant to their own sites and industries. Hands-on activities covering tool hygiene and pest reporting added an interactive element to the module. Competitors brought plenty of energy, enthusiasm, and lateral thinking to the challenges and KVH congratulates them all on their skills, commitment, and dedication to building careers that will contribute to the future of New Zealand’s growing industries and communities. Congratulations to James Blair, an agronomist with AS Wilcox, who was named the 2026 Young Grower of the Year. Amber Davy, Quality and Field Manager for seed potato supplier Eurogrow and the Canterbury finalist, was runner-up with Amelia Marsden, Nursery Manager at Thomas Brothers Orchard and Nelson regional finalist, placing third. Finalist profiles and competition highlights can be found here.

Read more about Young growers put biosecurity skills to the test
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