The theory is that breathing near your plants releases carbon dioxide, boosting photosynthesis and growth The problem We’ve all done it. Walked past a drooping fern, crouched down and given it a few encouraging words (whether you admit it to other people is a different matter). We are told it’s actually good for our plants, so should we all be chatting away to them to help them thrive? The hack Speaking to your plants is said to encourage growth. This is because breathing near them releases carb