How to grow Heliotrope in the UK
Heliotropium arborescens
Heliotrope (Heliotropium arborescens) is a flower that grows well in UK gardens. Cherry-pie scent — plant near seating. Toxic to humans and pets if eaten. This guide covers when and how to sow Heliotrope, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
When to sow & grow Heliotrope
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr | May Plant | Jun Plant | Jul | Aug | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Any reasonable, moisture-retentive but free-draining soil
- Soil pH
- 6.0–7.5
- Position
- Full sun for most; some tolerate light shade
- Sowing depth
- Surface to 1 cm (check light requirement)
- Spacing
- 15–30 cm apart
- Sowing
- Sow under cover late winter–spring, or direct after the last frost
- Growing
- Water regularly; pinch tips for bushier plants
- Harvest & upkeep
- Deadhead often to prolong flowering
- Watch for
- Slugs and snails on seedlings; aphids on soft growth
Companion planting for Heliotrope
No specific companion notes for this plant.
Add Heliotrope to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Heliotrope FAQs
How much sun does Heliotrope need?
Heliotrope prefers full sun (6+ hrs direct).
When should I plant Heliotrope in the UK?
In the UK, plant Heliotrope in May, June. Planting in this window gives the roots time to establish before the plant is asked to grow away.
Is Heliotrope easy to grow?
Challenging. Cherry-pie scent — plant near seating. Toxic to humans and pets if eaten.