Four fire engines and around 25 firefighters were called to grass alight in Billet Road, Walthamstow.
Around half a hectare of open grassland was alight at the rear of a number of houses. A shed and garden fencing was also destroyed in the blaze. One gas cylinder was removed from the scene as cylinders can explode when exposed to heat.
The Brigade's 999 Control Officers took 23 calls to the fire.
A London Fire Brigade spokesperson said: "During the hot weather we are attending a large number of grass fires across London.
"We’re asking the public to take care not to drop cigarettes or matches on dry grass and to keep a very close eye on barbecues.
"Dropped glass can also start fires as the sun can magnify the sun’s rays.
"Grass fires can quickly spread and cause serious damage, so if you see grass smouldering, please call 999 immediately.”
• Never leave camp fires or barbecues unattended and extinguish them properly after you have finished using them
• Clear away bottles, glasses and any broken glass to avoid them magnifying the sun and starting a fire
• Dispose of smoking materials such as cigarettes safely
• Explain to children the dangers of playing with and lighting fires
The Brigade was called at 1634 and the fire was under control at 1805. Fire crews from Homerton, Edmonton, Soho and Stoke Newington fire stations attended the scene.
This incident came on the same day as crews tackled five other large grass fires across the city, with significant ones in Hornchurch, Beckenham, Barnet, Beckton and West Wickham.