You will find that Gardenia’s are not the easiest plants to bring into bloom, though plants that are happy with their situation will often bloom in late spring and again in the fall. They enjoy spending the summer outdoors in a shady spot. Thoroughly clean plants before bringing them back indoors to prevent possible pest problems. In winter, keep the leaves lustrous by polishing them every 6 weeks with a soft cloth that has been light sprinkled with vegetable oil.