Facts About the Gardenia Plant

Facts About the Gardenia Plant image by K. A. Arbuckle
Facts About the Gardenia Plant image by K. A. Arbuckle


Gardenia jasminoides, also known as cape-jasmine, is an evergreen shrub native to Asia. Bountiful, fragrant white blooms adorn the gardenia in mid-spring through early summer. Dark green, glossy foliage provide year-round interest.


Gardenia is propagated through cuttings, grafted to rootstock for nematode resistance or started from seed.


Cape-jasmine grows to a height and spread of 4 to 8 feet. Dwarf cultivars, such as Radicans, reach to 18 inches with a spread of less than 3 feet.


Plant gardenia in full sun to partial shade and in rich, well-drained soil. The plant performs best in slightly acidic soil with a pH around 5 or 6.

Outdoor Care

Gardenias survive outside in USDA hardiness zones 8 to 10. Spread a 3-inch layer of mulch around the plant. Remove dead flowers to encourage more buds to form. Prune in spring to maintain shape. Apply fertilizer during the growing season. Water weekly when less than an inch of rain falls.

Indoor Care

Gardenia thrives with indoor temperatures between 65 and 70 during the day and 10 degrees cooler at night. Water when the top inch of soil dries. Fertilize regularly. Use a humidifier to moisten the air and provide sunshine or a grow-light for at least 6 hours daily.


  • University of Florida
  • National Gardening Association
  • Purdue Extension

Who Can Help

  • USDA Plant Hardiness Zone Map
Keywords: gardenia jasminoides, cape-jasmine, evergreen shrub, fragrant white blooms

About this Author

Kit Arbuckle is a freelance writer specializing in topics such as health, alternative medicine, beauty, senior care, pets and landscaping. She has training in landscaping and a certification in medicinal herbs from a botanical sanctuary.

Photo by: K. A. Arbuckle