Four fire engines and around 25 firefighters were called to a fire at a range of allotments and small storage sheds on Seaford Road, Tottenham.
Around half of a shed was damaged by fire. There were no reports of any injuries.
The Brigade was called at 0448 and the fire was under control at 0622. Fire crews from Tottenham, Stoke Newington, and Hornsey fire stations attended the scene.
The cause of the fire is believed to be accidental.