Orchids could be the Jekyll and Hyde of houseplants. One minute you luxuriate in full, exotic blooms and the next you’re contemplating a brown stick and a single leaf. But those bare roots can still bear blooms in the right environment. Most orchids thrive by following two general rules: morning light and judicious watering. Place the orchid in an east- or south-facing window, then water the plant only once it’s nearly completely dry (test with your finger). Give it a drenching by placing it in the sink under a low stream of water for a minute or two. When in doubt, hold off watering for another day—overwatering is the number one mistake in orchid care.