Earth Hour 2011

Australian advertising agency Wunderman Sydney produced an innovative environmentally-friendly marketing piece to support Earth Hour, their pro-bono client since 2009. To encourage businesses to participate in Earth Hour 2010, five-thousand 'Plant Spikes' were produced and distributed to offices around Australia. The spike was designed to be inserted in office pot plants by plant hire company TPR Group as they serviced plants in businesses nationwide.
To ensure the spike was completely environmentally-friendly, the agency partnered with printer STI Lilyfield to invent an organic printer's ink containing natural plant fertilizer derived from Durvillaea potatorum and extract of Ascophyllum nodosum (harvested sustainably), to promote healthy plant growth and improve resistance to insect and fungal attack. Printed on 100% FSC-certified paper, this ink fertilized the pot plants as the spike biodegraded naturally in the plant's soil.