How do you grow gardenias outside?

To grow gardenias outside, choose a location with well-drained, acidic soil and full sun to partial shade. Water them regularly to keep the soil consistently moist but not soggy, as gardenias thrive in humid conditions. Fertilize with a balanced, slow-release fertilizer formulated for acid-loving plants during the growing season. Protect them from frost and extreme temperatures, and consider pruning after blooming to maintain their shape and encourage new growth.