Potted Philodendrons have a preference for bottom watering, which means providing water from the bottom rather than watering from above. This method is especially important for seedlings, as they are more susceptible to damage when watered from the top. To meet their moisture needs, it is advisable to place seedlings in a tray of water, allowing them to soak up the water from below. This approach ensures that these plants receive the necessary hydration while minimizing the risk of harm during the early stages of growth.