Requirements for Growing Gardenias in Pots. Location. Choose a location that is warm, bright and sunny. Soil. For growing gardenias in pots, choose quality potting soil that is light, well-drained and rich in organic matter. Water. Humidity. Temperature. Repotting. Fertilizer. Pruning Gardenia. Jan 26, 2018 – With adequate water, sufficient drainage, an acidic soil and plenty of sunlight, gardenias can grow just as well in pots as they do planted in the ground. Place enough organic topsoil to fill a pot halfway, then mix in one or two handfuls of coffee grounds. Method 1. Growing Gardenias in Pots. Pick out a pot that is larger than your plant. Fill your pot with soil that drains well. Make sure your pot has drainage holes. Give your Gardenia the humidity it needs. Consider keeping your Gardenia outdoors. Think about growing your Gardenias indoors. HGTV offers tips for how to avoid killing your gardenia with one of these critical mistakes. Gardenias growing in containers need bright light or filtered shade with no direct sun. Gardenias grown indoors should receive at least 6-8 hours of direct . Are you trying to fill a large pot that will sit on a deck or patio? There is a gardenia variety to suit just about every landscape design need from compact smaller . Mar 19, 2015 – The gardenia plant can also be successfully grown in containers and treated like houseplants indoors. However, when growing a gardenia . Sep 21, 2017 – Gardenias, evergreen perennial shrubs valued for their fragrant flowers and . winter frost is a threat, gardeners raise gardenias in pots indoors.