Overview
- Reports highlight budget-friendly winter bloomers such as snow heather (Erica carnea) down to about −25 °C, plus winter aconite, Christmas rose, fragrant viburnum and witch hazel for color from late fall into spring.
- Polsterphlox tolerates roughly −20 °C outdoors, while Fuchsia magellanica manages around −5 °C with added root protection like leaves, straw or conifer branches.
- Gardeners are advised to move frost-sensitive container plants such as oleander, olive and myrtle into winter quarters once nights dip toward −5 °C.
- Hardier container species including pomegranate and windmill palm can stay outside longer in wind-sheltered spots to around −10 °C.
- Geraniums can be overwintered by lifting and cutting shoots to about 10 cm, wrapping in newspaper, storing at roughly 5–10 °C and misting occasionally to keep them lightly moist.