Poinsettias thrive on sunlight. If possible place your poinsettia near a sunny window away from heat ducts or fireplaces. Water whenever the soil feels dry to the touch. After the flowers (technically the bracts form the colorful petals, the yellow centers are the true flowers) fade you can toss the entire plant or keep the plant as a houseplant. Simply prune the plants back to a height of 6 to 8 inches and eventually you will see vigorous new growth. You can move the plants outdoors after frost danger. Feed your plants once a month with a liquid houseplant fertilizer.
Poinsettia | Costa Farms. (2020).