Photographer Laura Trosh knows a thing or two about guerrilla gardening: the (technically illegal) act of planting grey and unused city corners with new plant life. For her course at London College of Communication, she followed a gardening group for a night, documenting their work on a London site.

Here are some of her photographs, along with commentary from Laura about the event. To see more of her work, click along to her website.

Photo: Midnight gardening in London. Laura explains: "For this particular event they were working on one of their main sites in Lambeth. It was a cold March evening, and the night's aim was to strip away the dead lavender bushes and plant new ones." On the left of the image, you can see some of the dead lavender bushes that the group dug up. 

Photo: Young lavender, ready and waiting to be planted. "They've been tending to this patch for six years," Laura says, "and harvest the lavender yearly, using it to make pillows which they sell. All profits are reinvested into the project. It took five separate car journeys to take all the dead lavender away."

Photo: Planting the lavender. "There were about 8 volunteers, ranging from people who are very active in guerrilla gardening, and come to all of the events, to people who had never guerrilla gardened before."

Photo: And, finally, watering the new lavender.