How to grow Nemesia in the UK
Nemesia
Nemesia (Nemesia) is a flower that grows well in UK gardens. Many newer varieties are scented — check label. Cut back midsummer for fresh flush. This guide covers when and how to sow Nemesia, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
When to sow & grow Nemesia
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 Nemesia
No specific companion notes for this plant.
Add Nemesia to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Nemesia FAQs
How much sun does Nemesia need?
Nemesia prefers full sun (6+ hrs direct).
When should I plant Nemesia in the UK?
In the UK, plant Nemesia in May, June. Planting in this window gives the roots time to establish before the plant is asked to grow away.
Is Nemesia easy to grow?
Easy — good for beginners. Many newer varieties are scented — check label. Cut back midsummer for fresh flush.