In contrast with the increasing green demands from various stakeholders, corporations might prefer green blushing, that is, deliberately avoiding communicating their efforts for sustainable development. Surprisingly, these companies make substantial green achievements, but decide not to communicate their greenness. Using a broad literature review on green blushing and a conceptual reasoning backed up by anecdotal evidence, we expose the likely consequences of under-communicating green achievements and develop several rationales that explain this apparent puzzle. We also propose that silent or timid corporations can make the best of two worlds, by taking advantage from communicating their greenness while avoiding its main pitfalls.We suggest practical ways to do it.