VIRTUAL Backyard Composting Webinar Series. Apr. 6: Build Your Own Traditional Compost Bin, Apr. 13: Starting Your Traditional Compost Pile, Apr. 20: Bokashi & Composting, Apr. 27: Troubleshooting, Harvesting, and Using Traditional Compost. The weekly series will cover how to DIY build your own compost bin, what to add for optimal decomposition, utilizing the bokashi method, and how to harvest and use your finished product. 6–7 pm. Solana Center for Environmental Innovation, 137 N. El Camino Real, Encinitas. Register at www.solanacenter.org.