How to grow Tuberous Begonia in the UK
Begonia x tuberhybrida
Tuberous Begonia (Begonia x tuberhybrida) is a flower that grows well in UK gardens. Start indoors in March, hollow-side up. Lift before frost. Keeps for 10+ years if stored well. This guide covers when and how to sow Tuberous Begonia, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
Type
Flowers
Difficulty
Moderate
Position
partial sun (3–6 hrs)
Sow
spring
Harvest
—
When to sow & grow Tuberous Begonia
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr | May | Jun Plant | Jul | Aug | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Rich, free-draining soil
- Soil pH
- 6.0–7.5
- Position
- Full sun and shelter
- Sowing depth
- 10–15 cm deep (varies by type)
- Spacing
- 10–30 cm apart
- Sowing
- Plant in spring after frost; lift tender types (dahlia, gladioli) before winter in cold areas
- Growing
- Water and feed in growth; stake tall types
- Harvest & upkeep
- Deadhead; lift and store tender bulbs/tubers over winter where frosts are hard
- Watch for
- Slugs, earwigs and aphids on soft growth
Companion planting for Tuberous Begonia
No specific companion notes for this plant.
Grow Tuberous Begonia this year
Add Tuberous Begonia to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Tuberous Begonia FAQs
How much sun does Tuberous Begonia need?
Tuberous Begonia prefers partial sun (3–6 hrs).
Is Tuberous Begonia easy to grow?
Moderate. Start indoors in March, hollow-side up. Lift before frost. Keeps for 10+ years if stored well.