A hedge fire that's spread to a shed in Southland is partially under control, but high winds are threatening efforts

Crews were called to Waimea Valley Road, near Riversdale, about 8.30 this morning.

A row of trees and a hay barn, are on fire.

Fire and Emergency southern shift manager Lyn Crosson says four fire engines, four tankers, a rural fire officer and a senior fire officer are at the scene.

Crosson says they're confident they have the blaze contained to one area.