The gardenia shrub is a strong shrub through all seasons. Unlike many flowering shrubs that bloom all at once, gardenias bloom intermittently from mid-spring until autumn. Growing gardenias, sometimes called Cape Jasmine, is easy and fulfilling to watch grow in your landscape. Gardenias can be planted in containers or potted plants and brought indoors or in a warm garage for the winter. Morning sun and afternoon shade is the perfect planting site for these gorgeous plants.