Delete Question: What are some small houseplants that will fit on a narrow windowsill? Answer: There are plenty of plants plants that may work because they are naturally diminutive or because they are small when young and can live on a windowsill for a long time until they grow too large. Here are a few plants to consider: miniature African violets, bird’s nest sansevieria, miniature orchids, tillandsias and other small bromeliads, creeping fig and string of hearts/rosary vine (Ceropegia woodii).