How big do gardenias get. Gardenias belong to the Rubiaceae family. They are native to tropical and subtropical regions of Asia, Africa, and Australia
How big do gardenias get
Gardenia
Since the 18th Century, they have been termed the most popular shrubs in South Carolina.
Gardenias are named by Carl Linnaeus, after the Scottish naturalist Alexander Garden. They belong to the Gardenieae tribe. Gardenias are not easy to grow.
Mature height/spread
- Gardenia is known as Cape jasmine. It’s an evergreen, glossy shrub that is grown in the gardens. They reach up to heights and beautify the yard.
- A typical gardenia may grow up to the height of 3-8 feet (60cm to 240cm). Different varieties show different growth rates.
- The Smaller varieties of gardenias grow up to 2 feet tall (60cm).
- The Large species of gardenias grow up to 8 feet tall (2.4m).
- The foliage of gardenias is dark green consisting of 2- to 4-inches long leaves.
- Gardenia produces either single or double flowers ranging 2- to 4-inches in diameter.
- Features
- They are waxy white and are very fragrant.
Growth Rate
Depending upon different species, the growth rate of gardenias ranges from medium to low.
Gardenias varieties
Gardenia has various beautiful varieties, and each has its height and spread. Let’s see how big gardenias can get. Classification based on zones, height, and spread of gardenias;
Gardenia Jasminoides
- Hardiness zone-8-11
- Height-3 to 7 inches (8 to 18cm)
- Spread– 5 to 6 inches (13cm to 15cm)
- Requirements: They require partial shade
Gardenia thunbergia
- Hardiness zone-10 to 12
- Height-5 to 16 inches (13 to 40cm)
- Spread- 4 to 10 inches (10cm to 25cm)
- Requirements: They require full sun or partial shade.
August Beauty Gardenia
- Hardiness zone-8 to 11
- Height-4 to 5 inches (13 to 10cm)
- Spread– 8cm
- Requirements: Full sun or partial shade
Gardenia Radicans
- Hardiness zone-7b to 9
- Height-1 to 2 inches (2.5 to 5cm)
- Spread– 3 to 4 inches (8cm to 10cm)
- Requirements: They require full sun or partial shade.
Nanu or Na’u
- Hardiness zone-10
- Height-3 to 20 inches (8 to 50cm)
- Spread– 2 to 6 inches (5cm to 15cm)
- Requirements: They require Full sunlight.
Aimee Yoshioka
- Hardiness zone-8-11
- Height-5 to 8 inches (13 to 20cm)
- Spread– 4 to 7 inches (10cm to 18cm)
- Requirements: They require full sun – partial shade.
Belmont Gardenia
- Hardiness zone-7-9
- Height-4 to 8 inches (10 to 20cm)
- Spread– 3 to 6 inches (8cm to 15cm)
- Requirements: They require full sun – partial shade.
Fortuniana Gardenia
- Hardiness zone-8 to 10
- Height-4 to 8 inches (10 to 20cm)
- Spread– 4 to 8 inches (10cm to 20cm)
- Requirements: They require Full sun to partial shade.
Fertilizers
Adding fertilizers can enhance plant growth and can ensure healthy plant growth. A balanced fertilizer comprises all the components in the ratio of 2-1-1.
Fertilizers that can be opted for include:
- Pennington Evergreen & Rhododendron Plant Food
Nutrients Ratio (12-6-6)
- Lilly Miller UltraGreen Azalea, Camellia & Rhododendron Food
Nutrients Ratio (10-5-4)
- Sta-Green Azalea, Camellia & Rhododendron Food
Nutrients Ratio (10-5-4)
- Pennington Azalea Food
Nutrients Ratio (10-6-8)
- Scotts Evergreen, Flowering Tree & Shrub Fertilizer
Nutrients Ratio (11-7-7)
- Vigoro Azalea, Camellia & Rhododendron Food
Nutrients Ratio (10-8-8)
You can opt for Organic fertilizer;
- Espoma Holly-Tone
Nutrients Ratio (3-4-3)
- Fertrell Holly Care
Nutrients Ratio (4-6-4)
- Jobe’s Organics Azalea Camellia fertilizer
Nutrients Ratio (4-4-4)
- Natural Guard Evergreen & Holly Food
Nutrients Ratio (5-4-5)
Tip
Remember not to fertilize the gardenias in the fall.
Conclusion
Gardenia is known as Cape jasmine. It’s an evergreen, glossy shrub that can be grown in the gardens. A typical gardenia may grow up to the height of 3-8 feet (60cm to 240cm).
Different cultivators show different growth rates. The Smaller varieties of gardenias grow up to 2 feet tall (60cm). The large species of gardenias show a growth up to 8 feet tall (2.4m).
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