You don't need to be a gardener to be a guerrilla gardener. Simply find a area of unloved land, pull the pin and shake it, soak it, throw it and grow it. Grow it - March till June or Aug to Oct (autumn growing will result in flowering the following year). Seedboms will biodegrade over time into the environment they are growing, leaving only plants behind.
Seed mix: Cornflower, Corn Marigold, Corn Poppy, Forget-me-not, Oxeye Daisy & Red Campion.
H8cm x W5cm, approx 25g