With Fall on it's way for my friends in the northern hemisphere and spring down here I thought I would share this easy experiment any one can do any time of the year. Earlier this year Sir N and I spent a delightful day out at Barwon Waste Management Education Centre where we helped in an experiment called Compost in a Bottle. This is a wonderful experiment you can do at home and watch over the year to see what happens. You will Need Strips of news paper Blood & Bone (garden fertilizer) Bread Grated Carrot Grated Potato Soil Two or Three 2.25 Lt cold drink bottles (we used Coke bottles) Method Clean the plastic bottles well. Cut the bottle around the top leaving a small part to act as a hinge. You will need fruit, vegetables, soil, paper and fertilizer. In order to make all the bottles identical I chose to grate carrots and vegetables and use a cup measure when placing into the bottles. Follow the recipe (a picture recipe) Layer soil, vegetables, fertilizer (only a tablespoon per layer) and paper. Each bottle needs to be identical. Spray each layer with a little bit of water. Do NOT soak. Only a fine mist spray. The original experiment required two identical bottles. We made a third bottle without fertilizer because we wanted to know how well compost worms work in comparison to fertilizer in a compost bin. When the bottles are full tape them shut. Mark the side of the bottle with a permanent pen showing the different layers. Place one bottle on the windowsill, and one in a dark cupboard. We placed the one with the worms in the dark cupboard as well. Seven Months Later ... Left - Windowsill bottle Middle - Dark Cupboard with worms Right - Dark Cupboard. What experiments have you done with your families recently ? Blessings Chareen This post is part of the Schoolhouse Review Crew Fall into Nature Blog Cruise. (Goes up on Tuesday 22 October)