Dictamnus albus commonly called Gas Plant. While in bloom, it emits a citrusy, flammable oil that briefly ignites when exposed to flame. It's completely harmless to the plant, but incredibly fun. I have OMRI Listed SNS DC Disease & Fungal Control Ready to Use houseplants What are the brown spots on the leaves of this plant, is it dangerous and how can I treat it? Gardening & Landscaping Stack Exchange Large White Faux Hydrangea Potted Plant Walled city progress update and future plans