Overwintering guide
How to overwinter ageratum houstonianum 'artist blue'
Winter watering
If you do keep it going indoors, water sparingly — just enough that the compost never dries out completely — and do not feed until growth restarts in spring.
The mistake that kills ageratum houstonianum 'artist blue' in winter
Leaving ageratum houstonianum 'artist blue' outside over winter expecting it back in spring. As an annual it will not return — seed or cuttings are the only way to carry it forward.
More ageratum houstonianum 'artist blue' care
- Overwintering hawaii blue flossflower — the species this cultivar belongs to
- Full ageratum houstonianum 'artist blue' care guide
- Ageratum houstonianum 'Artist Blue' temperature range
- How often to water ageratum houstonianum 'artist blue'
- How to prune ageratum houstonianum 'artist blue'
- Common ageratum houstonianum 'artist blue' problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering ageratum houstonianum 'artist blue' — FAQ
Does ageratum houstonianum 'artist blue' need to come indoors for winter?
Ageratum houstonianum 'Artist Blue' is grown as an annual — it is frost-tender and naturally finishes at the end of the season, whatever your zone. In most climates ageratum houstonianum 'artist blue' is grown as an annual, so there is usually nothing to overwinter — the plant completes its life cycle and dies back with the first frosts. If you want to carry it over, lift it before the first frost and grow it on in the brightest window you have, or take cuttings; otherwise collect seed and start fresh in spring, which is what most growers do.
When should I move ageratum houstonianum 'artist blue' for winter?
Lift or take cuttings before the first frost — or let it finish and save seed.
How often should I water ageratum houstonianum 'artist blue' in winter?
If you do keep it going indoors, water sparingly — just enough that the compost never dries out completely — and do not feed until growth restarts in spring.
What kills ageratum houstonianum 'artist blue' over winter?
Leaving ageratum houstonianum 'artist blue' outside over winter expecting it back in spring. As an annual it will not return — seed or cuttings are the only way to carry it forward.