Seed bombs are the basic weapon of choice for guerrilla gardeners who want to transform a disused, neglected area of land into a colourful oasis. Guerrilla gardeners will usually work a piece of land with the tools of the average gardener if access to the land is easy, but there are occassions when access is either difficult or may incur legal action if disturbed.To overcome this, seed bombs, which will contain everything needed for the seeds to germinate and thrive, can be thrown onto the land. Helium