Gardenia jasminoides
An evergreen shrub with glossy dark-green leaves and highly fragrant white flowers that bloom year-round in warm, humid conditions, thrives in acidic, well-drained soil with bright indirect light, and is commonly grown as a hedge or specimen, reaching 3–6 feet in height.
Common Names
Cape Jasmine, Gardenia, Common Gardenia, Cape Jessamine
Summary
Gardenia jasminoides is an evergreen shrub native to southern China and Japan, valued for glossy dark-green foliage and intensely fragrant white flowers that bloom mainly in spring and summer. It typically grows 3 to 8 feet tall and wide, with a dense, bushy habit and year-round foliage.
In cultivation, Gardenia jasminoides prefers acidic, well-drained soil and consistent moisture, with bright light and some shade and high humidity to support lush growth. It is hardy in USDA zones 7–11, with outdoor plantings suited to full sun to light shade and winter protection, while indoors require bright indirect light. Water weekly to keep the soil evenly moist but not soggy, mulch to conserve moisture, and fertilize with an acid-loving formula in spring and midsummer, avoiding fall feeding. Pruning after flowering helps maintain shape; propagation is by cuttings. Uses include specimen plants, hedges, or container plantings, with fragrance enhancing scented gardens; common pests include aphids, scale, and whiteflies, and diseases such as powdery mildew or root rot may occur. Gardenias are toxic to pets if ingested.
Lifecycle
Perennial
Height
48-96 inches
Spread
3-8 feet
Hardiness Zones
Zones 8-11
Sunlight Requirements
Ideally Full Sun, tolerates Partial Sun and Partial Shade, Full Shade not recommended.
Soil Type
Acidic, well-drained soil rich in organic matter that stays moist (pH ~5.0–6.5, ideally 5.0–6.0).
Soil Drainage
Well-drained, moist but not waterlogged, acidic soil.
Soil pH
5.0-6.5 (acidic)
Bloom Color
White, creamy white to ivory; some cultivars have yellow flowers aging from white to creamy yellow.
Bloom Time
Spring and Summer, with Fall blooms in some climates and year-round flowering in warm climates.
Foliage Color
Dark green (glossy foliage)
Fall Foliage Color
No fall color change; evergreen leaves stay green year-round.
Leaf Lifecycle
Evergreen broadleaf
Growth Rate
Moderate growth; about 30–60 cm per year.
Seasons of Interest
Spring, Summer, Fall, and Winter
Propagation Methods
Seeds, Cuttings
Attracts Wildlife
Bees and other pollinators
Taxonomy
- Taxonomic Rank
- Species
- Author
- J.Ellis
- Publication
- Philos. Trans. 51(2): 935 (1761)
Superior Taxa
- Kingdom
- Plantae
- Subkingdom
- Pteridobiotina
- Phylum
- Angiosperms
- Order
- Gentianales
- Family
- Rubiaceae
- Genus
- Gardenia
Synonyms
Mussaenda chinensis Warneria augusta Gardenia jasminoides var. plana Gardenia florida f. simpliciflora Gardenia florida var. ovalifolia Gardenia jasminoides f. albomarginata Gardenia florida var. grandiflora Gardenia augusta var. grandiflora Gardenia jasminoides f. maruba Gardenia jasminoides var. maruba Gardenia florida var. maruba Gardenia jasminoides f. oblanceolata Gardenia florida f. oblanceolata Gardenia jasminoides var. ovalifolia Gardenia augusta var. ovalifolia Gardenia jasminoides f. aureovariegata Gardenia jasminoides f. variegata Gardenia jasminoides var. fortuneana Gardenia florida var. fortuneana Gardenia jasminoides var. longisepala Gardenia jasminoides var. radicans Gardenia jasminoides var. variegata Gardenia jasminoides f. albovariegata Gardenia jasminoides f. simpliciflora Gardenia radicans var. simpliciflora Jasminum capense Gardenia angustifolia var. kosyunensis Gardenia augusta var. kosyunensis Gardenia angustifolia Gardenia augusta Gardenia augusta var. longisepala Gardenia florida var. plena Gardenia florida Gardenia grandiflora Gardenia grandiflora Gardenia jasminoides var. grandiflora Gardenia jasminoides f. longicarpa Gardenia longisepala Gardenia pictorum Gardenia radicans Gardenia schlechteri Genipa florida Genipa grandiflora Genipa radicans Gardenia jasminoides var. jasminoides Gardenia augusta f. shanpinensis Gardenia jasminoides f. kueishanensis Gardenia jasminoides var. plena Gardenia florida f. thunbergii Gardenia radicans unr. variegata Gardenia jasminoides f. grandiflora Gardenia jasminoides f. ovalifolia Gardenia florida var. radicans Gardenia maruba Gardenia florida unr. variegata Gardenia jasminoides var. kosyunensis