Gardenia’s are most famous for their scented and waxy white flowers that can bring a garden to life. Depending on your geographical location (and personal preference) you get to decide whether your gardenia will live indoors or outdoors. To ensure that your gardenias bloom throughout their growing season, keep the soil well drained and at a pH of 4.5 to 5.5 regardless of whether they are planted in a pot or outside in the garden. These plants also need ample amounts of water, so make sure to never let your gardenia dry out – water regularly.