Grant Dawe, the manager of Morton Smith-Dawe Ltd, a big Christchurch supplier of seed potatoes for the Dunedin market, said the firm had been out of Jersey benne seed potatoes for the past three weeks.
A crop failure by a South Canterbury supplier, combined with some wet growing conditions and low soil temperatures, had contributed to the reduced supply, Dawe said.
This had been the most disrupted supply of Jersey benne seed potatoes in the past five years, he said.
Mitre 10 Dunedin and some other outlets were out of Jersey benne seed potatoes last week, but several other alternative varieties were still available.
Wal's Plant Land retail manager Kerry Dee said she was aware of only limited supplies of the seed potatoes in the city, but Wal's still had a supply, and some other alternatives were also available.
Among early season varieties, the firm was yesterday out of Liseta and Swift, and still had a moderate supply of Rocket, she said.
Nichol's Garden Centre Dunedin senior shop assistant Davie Dijker said the supply of Jersey bennes had finished about four weeks ago, and Liseta, Cliff kidney and Swift varieties were also out.
However, other early season varieties were available for planting.
"Try something else," he advised.
"People are fixated about Jersey bennes-their grandfather put them in, their father put them in," he added.