Keep those greens thriving with these must-know watering tips. By Lauren Phillips Bringing home new house plants can be a huge rush. It’s a little like bringing home a new puppy or kitten, but with much, much less work. That isn’t to say that plants don’t need a little TLC, though. Sure, there are plants that don’t need sunlight and some greens that basically take care of themselves, but all plants need a little water now and then.