I usually put my potted oleanders in a lightish integral garage during the winter. Winter 2021-22 I left a smaller one in an unheated greenhouse as an experiment. It survived well. Winter 22-23 it still survived well, although the temperature went to -5ºC on several occasions and for several days at a time. My deciduous agapathuses given the same treatment look like they are dead.
I have seen adverts for oleanders as hardy. Not so. Except for a brief Mediterraneum frost.
location: Surrey Hills, England, ex-woodland acidic sand. "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
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I have seen adverts for oleanders as hardy. Not so. Except for a brief Mediterraneum frost.
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
Whilst there is an audience of oleanderphiles and before the usual flowering season, let me share my growing advice.
Do you suffer bud-drop and poor flowering. I did for years until I learned:
1. Stand the pot in a saucer of water, never let it dry out.
(Oleander are one of the rare pot plants that like this treatment.)
2. Pull off the new shoots growing at the side of the flower spike.
I learned these tricks at about the same time from different sources. I have never tried them separately to know which one works best.
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."