Phal orchid plant is easily grown indoor and last long. They can be repotted anytime but it is the best when they are not in bloom. Do not over-water. Water every 7 days to 10 days. If you are unsure when to water, when the leaf go wrinkle, that's mean they are thirsty. Reduce watering in Winter. Provide them with a moderate amount of sunlight but avoid direct sunlight. Use a fertiliser for nutrition.