Introduction
Heliotrope 'Marine Blue' (Heliotropium arborescens 'Marine Blue') is a classic annual or tender perennial prized for its clusters of deep violet-blue flowers and intensely sweet vanilla-like fragrance. It is an easy warm-season plant that performs well in Florida's spring and fall seasons. Available in a #1 container.
Growing conditions
- Light: Full sun to partial shade; best blooms in full sun.
- Water: Moderate; keep soil consistently moist but not waterlogged.
- Soil: Well-draining, fertile soil with good organic matter.
- Fertilizer: Balanced slow-release fertilizer at planting; liquid fertilizer monthly during the growing season.
- Season: Warm-season annual or tender perennial; best in spring and fall in Florida.
Planting tips
Plant in a sunny, well-drained location. Excellent for containers, borders, and butterfly gardens. Deadhead spent flower clusters to encourage continuous blooming. In Florida, plant in fall or early spring to avoid summer heat stress. The fragrance is strongest in warm weather.
Troubleshooting
Wilting in heat
Heat stress in Florida summers. Provide afternoon shade and increase watering during the hottest months.
Powdery mildew
Fungal disease in humid conditions. Improve air circulation and avoid overhead watering.
Aphids
Check new growth for colonies. Treat with insecticidal soap or a strong water spray.
Pet safety
Heliotrope is toxic to pets and humans if ingested. All parts of the plant can cause liver damage and should be kept away from dogs, cats, and children.
Quick care summary
Difficulty: Easy. Light: Full sun to partial shade. Watering: Moderate, keep consistently moist. Humidity: Moderate. Pet safety: Toxic to pets and humans.
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