If you’re an enthusiastic gardener or a nature lover looking to add some greenery to your indoor or outdoor space, exploring plants starting with the letter “O” can be an exciting endeavor. From ornamental beauties to useful herbs, the world of flora has a lot to offer. In this beginner’s guide, we’ll dive into a comprehensive list of plants that start with “O” to help you discover some fantastic options for your garden. So, let’s get started and explore the lush world of “O” plants!