Gardenia
Gardenia jasminoides
Gardenias are evergreen shrubs famous for their glossy foliage and intensely fragrant, waxy white flowers. They are rewarding but demanding, requiring acidic soil, humidity, and steady warmth.
- Light
- Bright light; some direct sun
- Water
- Keep evenly moist with acidic water
- Difficulty
- Hard
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Overview
Gardenias are evergreen shrubs grown for their richly perfumed, creamy-white flowers set against deep glossy green leaves. Their fragrance is among the most prized of any garden plant.
They are notoriously fussy: gardenias demand acidic soil, consistent moisture, warmth, and high humidity, and they readily drop buds or yellow if conditions shift. With careful attention, though, they reward growers with months of intoxicating bloom.
How to identify it
Identified by waxy white flowers and lustrous evergreen leaves.
- Flowers: Waxy, creamy-white, single or double, intensely fragrant, aging to cream or yellow
- Leaves: Glossy, dark green, oval, leathery, opposite
- Habit: Rounded evergreen shrub, typically 2-6 ft tall
- Scent: Powerful sweet perfume, strongest in warm conditions
Care & growing
Gardenias need acidic, humid, warm conditions and are intolerant of stress.
- Light: Bright light with some morning sun; avoid harsh afternoon sun
- Water: Keep evenly moist with rain or acidic water; avoid letting it dry out or get waterlogged
- Soil: Acidic (pH 5-6), rich, well-draining
- Temperature: Warm and stable; sensitive to cold and sudden temperature swings
- Humidity: High humidity is essential, especially indoors
- Feeding: Use an acid-loving (ericaceous) fertilizer in the growing season
- Propagation: From semi-hardwood cuttings
Habitat & origin
Gardenia jasminoides is native to East Asia, particularly China and Japan, where it grows in warm, humid woodland and forest margins.
It is widely cultivated in subtropical and warm-temperate gardens and as a fragrant houseplant or greenhouse specimen in cooler regions.
Frequently asked questions
Why are my gardenia buds falling off?
Bud drop is usually caused by inconsistent watering, low humidity, temperature swings, or drafts. Keep conditions stable and humid.
Why are gardenia leaves turning yellow?
Yellowing often signals alkaline soil and iron deficiency; gardenias need acidic soil and acidic water.
Are gardenias hard to grow?
Yes, they are considered demanding because of their need for acidic soil, humidity, warmth, and steady care.
How big do gardenias get?
Most form rounded evergreen shrubs about 2-6 ft tall, with glossy dark leaves and waxy white flowers.
Gardenia guides
In-depth guides for identifying, growing, and caring for Gardenia.
Gardenia identified by the community
Real specimens identified with Plant Identifier.
