Fire crews are working to protect a house from a large haybarn fire in Winslow, near Ashburton.
A Fire and Emergency NZ spokesman said they were called to the blaze at 6.23am.
He said six fire engines are in attendance.
"We have a large haybarn on fire and three large haystacks. We have firefighters protecting exposures at this stage.
"They're protecting a shelterbelt, a house and unburnt hay at this stage."
There are about 16 firefighters in attendance at 8am, the spokesman said.