Houseplants spark joy. They add a splash of life and color to any indoor space, and if properly chosen and cared for, they can thrive just about anywhere. Anyone who’s ever started an indoor garden knows that tending to houseplants can quickly become a way of life, if not an addiction. Caring for living things is meditative and therapeutic, and the design aspect they bring to your living space drives you to keep growing your plant collection.

There are a lot of apps and gadgets that can help you care for your plants, but eventually, you’ll probably want to go full mad scientist and make your own plant babies. Propagating plants is not only cost-effective, it’s also a lot of fun—and will help you steps up your indoor gardening game significantly. While it might seem intimidating at first, growing new plants from cuttings, buds, or roots is a lot easier than you think, especially if you choose the right plants to work with. Here are 15 of the easiest houseplants to propagate.