Wet weather over the festive period is being blamed for the continued spread of the kiwifruit vine disease Psa.

Nationally, 11 more orchards have become infected in the last month.

A Psa infected vine.

Several more Gold kiwifruit orchards have been affected by the disease in the Te Puke region.

Kiwifruit Vine Health general manager John Burke says orchards which looked like they might produce a crop have seen the severity of the disease increase due to wet weather.

The total number of infected orchards in the country is 939.