New Zealand’s Avocado Crop Has Been Hit By Its Worst Frost In 30 Years

New Zealand avocado growers are still counting the cost of an extraordinary winter freeze that struck some of the country's principal growing regions, raising the prospect of reduced domestic avocado availability and another reminder of just how exposed fresh-food production can be to a few hours of extreme weather.

Temperatures dropped to around -5°C during the nights of August 5 and 6 and remained below freezing for an extended period, with NZ Avocado chief executive Brad Siebert reported as describing it as the industry's worst frost event since 1995. Orchards in the Bay of Plenty were particularly exposed just as the harvest was beginning to build. Fruit has subsequently dropped from trees, foliage has browned and some early flowers appear to have been lost completely. Any fruit that hits the ground, or shows frost damage, is excluded from both export and domestic supply.

The damage is not confined to commercial orchards. Domestic growers in the Waikato have reported similarly severe losses. Tamahere Forum reported trees dropping virtually complete crops, extensive leaf burn and concerns over damage to flower buds developing ahead of spring. NZ Avocado research previously found severe frost damage in 93% of floral buds examined on unprotected young Hass trees following one particularly damaging frost year.

The timing matters. New Zealand's July estimate put the coming crop at 7.4 million 5.5kg trays, approximately 40,700 tonnes — already 6% below the initial forecast. By comparison, the country produced about 41,800 tonnes in 2024–25, sending 3.795 million trays offshore while supplying another 3.804 million trays to New Zealand consumers. Export earnings from avocados reached approximately NZ$109 million in the year to June 2025.

NZ Avocado currently expects only a relatively small reduction in total available fruit and says committed export markets should still be serviced. But the final damage assessment has yet to be completed. With export programmes already underway into Asia, Canada and later Australia, fewer marketable avocados inevitably means competition for the remaining fruit. For New Zealand consumers, that makes tighter supermarket supply, more variable sizing and firmer prices a realistic possibility during parts of the season — particularly if the next crop has also been compromised.

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