Around 150 marijuana plants were found growing among native plant life in a lush neighbourhood of south-west London.
Police in Kingston upon Thames discovered the plants on an disused private land, after receiving a tip-off from a member of the public. They posted images of their illicit discovery on social media under the hashtags #TheseAren'tXmasTrees and #WeedKiller
Some of the plants measured around 1.5 metres (5ft), towering above officers as they secured the scene and made arrangements for the plants to be removed and destroyed.
"The area these plants were growing on was the size of a football pitch, it looked like a small forest of Christmas trees and was complete with a gazebo.
"Whoever set this up used a really remote spot. The only way to get there was a 20-minute walk through wasteland. But all their time, trouble and gardening skills will go unrewarded, as the whole lot will now be destroyed by police," PC Sarah Henderson of Kingston upon Thames
No arrests have been made, but the investigation is ongoing.