Be sure to remove foil covering drain holes before watering. Water only when the soil is dry. Do not let the poinsettia wilt. Do not let it sit with water in the saucer,Poinsettiasalso like lots of direct light. Place your plants near a southern, eastern or western window and keep the soil moist while they are still in bloom. ... Instead, gently remove the plant from its container, soak it well and place it back in the pot.