Pinwheel

Pinwheel, botanically classified as Tabernaemontana divaricata and widely celebrated as Crape Jasmine, Crepe Jasmine, or Chandni, is an exceptionally elegant, evergreen flowering tropical shrub belonging to the Apocynaceae (dogbane) family. Native to the warm, humid, low-elevation woodland plains of India, Bangladesh, Sri Lanka, and tropical Southeast Asia, this hardy and resilient shrub is universally admired for its waxy, starch-white flowers that bloom abundantly throughout the entire year, creating a luminous glow under the night sky.

Growing as a compact, beautifully branched woody shrub that typically reaches heights of 3 to 6 feet in domestic gardens (and up to 15 feet in the wild), Tabernaemontana divaricata features large, opposite, glossy deep-green leaves that are elliptical and measure 3 to 6 inches in length. In warm, tropical climates, the shrub is constantly adorned with clusters of star-shaped, five-petaled white flowers. The delicate petals feature a distinct crinkled, crepe-like texture and are arranged in a charming propeller or pinwheel shape, emitting a sweet fragrance.

The reproductive architecture of the Crape Jasmine is represented by the botanical floral formula ⊕ ⚥ K(5) C(5) A5 G(2). This formula indicates that the flower is radially symmetrical (actinomorphic) and bisexual. The calyx consists of 5 small sepals fused at the base, while the corolla is composed of 5 petals fused into a slender tube that flares into 5 spreading, pinwheel-like lobes. The androecium contains 5 fertile stamens enclosed inside the corolla tube, surrounding a superior ovary made of 2 distinct carpels.

Horticulturally, Pinwheel is a highly adaptable, low-maintenance shrub that thrives in bright, full sun to partial afternoon shade, which helps prevent leaf scorch in hot summers. It prefers moderately fertile, organic-rich, neutral to slightly acidic soils (pH 6.0 to 7.0) with sharp drainage, requiring moderate watering to keep the soil evenly moist but never waterlogged. It is remarkably heat-tolerant once established but has low cold hardiness, surviving outdoors as a perennial in USDA zones 9 through 11.

The genus name Tabernaemontana honors Dr. Jacobus Theodorus Tabernaemontanus, a highly celebrated 16th-century German physician and 'father of German botany' who authored pioneering herbals. Famed on the Indian subcontinent as Chandni (चांदनी) in Hindi (meaning moonlight) and Nandiyavattai (நந்தியாவட்டை) in Tamil, it represents serene purity and peace. Its milk-white blooms are traditionally harvested for evening temple offerings and used in Ayurvedic skin cooling preparations.

For households with cherished domestic pets, it is extremely important to practice careful garden safety with the Crape Jasmine. Tabernaemontana divaricata contains a dense, milky-white latex sap rich in organic indole alkaloids (such as coronaridine) that are classified as TOXIC to cats, dogs, and horses if ingested. If chewed, the sap causes immediate oral irritation, heavy drooling, vomiting, and potential heart rate irregularities. To ensure a safe backyard environment for your pets, please check out our detailed safety guidelines in the Pet Guard library.

Pinwheel is occasionally confused with true Jasmine or Gardenias due to its fragrant white flowers. It is easily distinguished because Crape Jasmine exudes a thick, milky white sap when its stems are broken and its petals form a clear propeller shape, whereas true jasmines do not produce latex. It pairs beautifully in borders with bright Ixora or trailing Spanish Jasmine. To discover more evergreen tropical garden shrubs, visit our Flower Identifier.