Several fire crews battling blaze that was sparked from a controlled burn in Trent near Denmark

A bushfire has broken out in the Shire of Denmark after escaping a planned burn on Thursday.

Emergency services were alerted to the blaze near Collis Road and Paperbark Dale in Trent at 11.10am.

The fire has burnt 20ha and remains out of control.

A Department of Fire and Emergency Services spokesperson said four crews are on the scene with another four crews on the way.

DFES said the corner of Collis Road and Hazlevale Road is a control point for authorities.

The fire is not yet contained or controlled but crews are establishing firebreaks in a bid to fight the blaze.