Overwintering guide
How to overwinter lobelia erinus 'riviera lilac'
Winter watering
Cut watering right back — lobelia erinus 'riviera lilac' uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.
The mistake that kills lobelia erinus 'riviera lilac' in winter
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and lobelia erinus 'riviera lilac' rots from the base.
More lobelia erinus 'riviera lilac' care
- Overwintering edging lobelia — the species this cultivar belongs to
- Full lobelia erinus 'riviera lilac' care guide
- Lobelia erinus 'Riviera Lilac' temperature range
- How often to water lobelia erinus 'riviera lilac'
- How to prune lobelia erinus 'riviera lilac'
- Common lobelia erinus 'riviera lilac' problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering lobelia erinus 'riviera lilac' — FAQ
Does lobelia erinus 'riviera lilac' need to come indoors for winter?
Lobelia erinus 'Riviera Lilac' is hardy to roughly USDA zone 10 — winter lows around -1°C. That means it will not survive frost and needs to come inside. Lobelia erinus 'Riviera Lilac' is frost-tender, so overwintering means bringing it inside and letting it rest rather than pushing it to grow. Move it indoors well before the first frost, give it the brightest spot you have (light levels indoors drop sharply in winter), and keep it away from both cold window glass and hot radiators — the swing between the two does more damage than the cold itself.
When should I move lobelia erinus 'riviera lilac' for winter?
Bring indoors when nights start dropping below about 10°C, ahead of the first frost.
How often should I water lobelia erinus 'riviera lilac' in winter?
Cut watering right back — lobelia erinus 'riviera lilac' uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.
What kills lobelia erinus 'riviera lilac' over winter?
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and lobelia erinus 'riviera lilac' rots from the base.