We talk to the CEO of Sproutworld – the original plantable pencils. All aspects of the Sprout pencil are sustainable and non-toxic – from the biodegradable seed capsule to the 100% natural clay and graphite core and sustainably harvested wood. Regardless, of whether you are an experienced gardener or a novice, you can choose Sprout pencils in color or in grey, and when it’s time to stop writing you can start planting, e. Start enjoying vibrant flowers, fragrant herbs, or fresh vegetables.