Grandiflora Star Gardenia | Large White Fragrant Blooms

Star Gardenia White flower with green leaves in a pot on a wooden surface

Grandiflora Star Gardenia

5 Gallon

$54.90

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Grandiflora Star Gardenia

Gardenia jasminoides 'Grandiflora Star'

A compact, fragrant gardenia with large, pure white, star-shaped blooms and glossy evergreen foliage.

$54.90

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Bay Area–Based Nursery

We specialize in plants grown and delivered in their original pots and soil.
Because of their size and weight, our plants are not suitable for long-distance shipping and are delivered locally to ensure health and quality.

While delivery is limited to our local service area, we’re happy to support garden design and plant selection remotely.

For local plant professionals, we’re always glad to connect and explore ways to support your customers.

The Grandiflora Star Gardenia is a refined, compact evergreen shrub celebrated for its intensely fragrant, star-shaped white blooms and glossy, deep green foliage. This elegant cultivar produces an abundance of large, single, pure white flowers with elongated petals that radiate like a star, creating a striking contrast against the lush, leathery leaves . Blooming from mid-spring through summer, with sporadic rebloom into autumn, its powerful sweet fragrance can perfume an entire garden . An excellent choice for small gardens, containers, low hedges, or foundation plantings, it brings timeless elegance and sensory delight to any sheltered, sunny spot.

Knowing how we measure the size?

When browsing our plants, you may notice size terms such as Gallon, Multi, or Stand. These describe how a plant is grown, containerized, or structured at the time of sale — not just its height. Understanding these terms will help you choose the right plant for your space and expectations.

🌱 Gallon Size (Container Size)

Gallon refers to the size of the nursery container the plant is currently growing in (e.g. 1 Gallon, 5 Gallon, 15 Gallon).

A larger gallon size generally means:
- A more established root system
- A sturdier plant
- Faster visual impact after planting
Example:
- 5 Gallon: Ideal for residential gardens, easy to handle, good balance of value and maturity
- 15 Gallon: More mature, provides quicker results in the landscape

Note: Gallon size does not guarantee a specific height, as growth varies by species.

🌳 Multi (Multi-Trunk / Multi-Branch Form)

Multi indicates the plant has multiple trunks or main stems growing from the base.

Commonly used for:
- Ornamental trees
- Feature plants
- Japanese maples, olives, crepe myrtles, etc.
Why choose Multi:
- Fuller, more sculptural appearance
- Strong visual presence even at younger ages
- Popular for design-focused landscapes

🌲 Stand (Single-Trunk / Standard Form)

Stand (short for Standard) refers to a single, dominant trunk with a raised or naturally formed canopy.

Commonly used for:
- Shade trees
- Street trees
- Orchard and structural plantings
Why choose Stand:
- Clean, classic tree form
- Easier clearance for walkways and lawns
- Preferred for long-term structure and uniformity

🌿 Choosing the Right Size

If you want instant impact → larger Gallon, Multi form
If you want long-term structure → Stand form
If you want flexibility and value → mid-size Gallon containers

If you’re unsure which size or form fits your project, our team is happy to help you select the best option based on your space, timeline, and design goals.

Foliage & Flowers: Glossy, leathery, elliptic to lance-shaped, deep green leaves (to 6 inches long); large, single, pure white, star-shaped flowers (to 4-5 inches across) with 5-8 petals and a powerful, sweet, classic gardenia fragrance; blooms from mid-spring to summer, with possible autumn rebloom .
Mature Height: 1.5-4 ft .
Mature Spread: 1.5-4 ft .
Growth Rate: Slow to moderate .
Hardiness Zones: USDA 8b-11 (can be grown in containers in cooler zones) .
Light Requirement: Full sun to partial shade (protect from hot afternoon sun) .
Core Benefits: Exceptionally fragrant large white star-shaped flowers, compact habit, glossy evergreen foliage, perfect for containers and small spaces.
Best Uses: Container specimens, low hedges, foundation plantings, mixed borders, near patios and entryways, fragrant gardens, cut flowers.

Q: How large does Grandiflora Star Gardenia get?
A: It is a compact shrub, typically reaching 1.5-4 feet (0.5-1.5 m) in both height and spread at maturity . Its manageable size makes it perfect for containers and small garden spaces.

Q: How much sun does it need for the best flowering?
A: It performs best in full sun to partial shade. In hot summer climates, it benefits from protection from harsh afternoon sun, which can scorch its leaves . Morning sun with afternoon shade is ideal.

Q: How often should I water it?
A: Gardenias require consistently moist, well-drained soil. Water regularly, especially during the growing season, but avoid overwatering, which can cause root rot. A layer of mulch helps retain moisture and keep the shallow roots cool .

Q: Is it cold hardy?
A: It is reliably hardy in USDA zones 8b-11, tolerating brief temperatures down to about 15-20°F (-9 to -7°C) . In colder zones (USDA 7 and below), it should be grown in a container and overwintered indoors in a bright, cool location.

Q: Is it toxic to pets?
A: Yes, gardenias are considered moderately toxic to dogs, cats, and horses, particularly the berries . Keep this plant out of reach of curious pets. The plant is generally considered non-toxic to humans.

Q: Why are the leaves on my gardenia turning yellow?
A: Yellowing leaves (chlorosis) are most often caused by soil that is too alkaline. Gardenias require acidic soil (pH 5.0-6.0) . In neutral or alkaline soil, the plant cannot absorb iron, leading to yellowing leaves. Test your soil pH and amend with sulfur or an acidifying fertilizer as needed.

Q: How do I prune Grandiflora Star Gardenia?
A: Prune immediately after flowering in summer. Light pruning helps maintain a compact shape and encourages branching for the next season's blooms. Avoid pruning late in the season, as this will remove flower buds for the following year .