Our bamboo pots are made of sustainable bamboo fibre, rice starch and resin from naturally occurring organic compounds.No there is no petroleum-based plastics and BPA in these pots, making them biodegradable, compostable and able to last up to 5 years or more. They can be used indoors and outdoors.A composting process using these pots may take 6-12 months, but breaking the products into smaller pieces before adding them to your compost heap will help speed up the process.Both the 8? Pots and Saucers are also available in a traditional terracotta colour.