Oleander is only partially hardy
The flowering shrub is only partially hardy, ie it can withstand a maximum (and also only briefly) up to a maximum of minus five degrees Celsius. However, even this low temperature can cause the oleander to freeze to death - a single night with slightly frosty temperatures is enough. For this reason, the plant should overwinter under cold house conditions if possible, ie cool (but frost-free) at around five degrees Celsius and bright. In an emergency, the shrub can survive the winter with little or even without light - for example in the basement or in a garage.
also read
- Can you cultivate oleander as a houseplant?
- Cut back oleanders before wintering
- Oleander inspires with long-lasting flowering
It's not enough to wrap up winterproof
Unfortunately, simply packing oleanders ready for winter and leaving them outside is not enough. This strategy might be successful in mild winters, but one frosty night will ruin any effort. Therefore, always keep an eye on the weather forecast and, if in doubt, move the oleander to its winter quarters. Until then, however, he can stay outdoors, wrapped up as warmly as possible. Place the pot on a thick styrofoam or wooden base and wrap it with bubble wrap. You wrap the shrub yourself in gardening fleece. Alternatively, sink the pot in the ground and pile the oleander like a rose.
Put in late, clear out early
In principle, oleanders should be cleared into winter quarters as late as possible and taken outside again as early as possible. In this way, the plant survives the winter better, because most plants look quite worn out after the winter break and need a while until they have recovered. A pruning is then often inevitable, which can be problematic with oleanders in terms of flowering - after all, the shrub mainly flowers on biennial shoots.
Tips
Preferably prune oleander in spring to remove winter damage. If necessary, the shrub can also be cut back before it is given away for winter quarters.
