Heliotrope
Heliotropium arborescens
A tender shrubby perennial loved for dense clusters of tiny purple flowers with an intense vanilla-cherry fragrance, earning it the nickname 'cherry pie plant.' It is grown as a fragrant bedding and container plant in most climates.
- Light
- Full sun to light afternoon shade
- Water
- Keep evenly moist; do not let dry out
- Difficulty
- Moderate
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Overview
Heliotrope is a tender, woody-based perennial from Peru, almost always grown as an annual or container plant for its powerful sweet scent. The flowers are strongly fragrant, especially on warm evenings.
Its deep violet to blue-purple flower clusters sit above wrinkled, dark green foliage, making it a classic choice for Victorian-style bedding and fragrant patio pots.
How to identify it
- Bushy, mounded plant typically 1-2 ft (30-60 cm) tall in a single season
- Leaves are dark green, oval to lance-shaped, deeply veined and noticeably wrinkled (rugose)
- Flowers are tiny, five-lobed and borne in dense, slightly domed clusters (cymes) up to 4 in across
- Bloom color is deep purple to violet-blue, occasionally white, with a strong sweet fragrance
Care & growing
- Light: Full sun in cool climates; light afternoon shade where summers are very hot
- Water: Keep soil consistently moist; wilts quickly and resents drying out
- Soil: Rich, well-drained, organic soil
- Temperature: Frost-tender; thrives in warm but not scorching conditions
- Feeding: Feed regularly with a balanced fertilizer for steady bloom
- Propagation: From seed (slow) or, more reliably, from softwood stem cuttings; can be overwintered indoors
Pinch young plants to encourage bushiness and deadhead spent clusters to prolong flowering.
Habitat & origin
Native to Peru and parts of South America, where it grows as a perennial subshrub in warm, frost-free conditions.
Grown around the world as an ornamental bedding and container plant, prized in cottage and scent gardens. In USDA zones 10-11 it can persist as a small evergreen shrub.
Frequently asked questions
Why does heliotrope have such a strong scent?
Its flowers release a sweet fragrance, strongest on warm evenings, which gave rise to the common name 'cherry pie plant.'
Is heliotrope a perennial?
It is a tender perennial that survives outdoors only in frost-free climates; elsewhere it is grown as an annual or overwintered indoors.
Why is my heliotrope wilting?
Heliotrope dislikes drying out; sudden wilting usually means the soil got too dry, though it can also wilt in extreme heat.
How do I keep heliotrope bushy and blooming?
Pinch young plants to encourage branching and deadhead spent flower clusters regularly to prolong the display.
Heliotrope guides
In-depth guides for identifying, growing, and caring for Heliotrope.
How to Care for Heliotrope
Grow fragrant Heliotrope: clusters of deep purple blooms on compact plants, thriving in sun with steady moisture and warmth.
Heliotrope Identification Guide
Identify heliotrope (Heliotropium arborescens) by its dense, domed clusters of tiny purple flowers and its famously sweet vanilla-cherry fragrance.
