Nerium oleander 'Cassablanca'

Rose bay

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Key information

Plant type

Tender perennial

Flower colour






Skill level


Nerium oleander 'Cassablanca'

Plant details

Rose bay, Nerium oleander, is a drought tolerant, evergreen shrub native to the Mediterranean. There's a variety of cultivars to choose from, bearing pink, white or red flowers, in contrast with thin, pointed leathery leaves. Tender, it's best suited to growing in containers, which can be brought indoors in autumn.

Nerium oleander 'Casablanca' is a white-flowered rose bay, blooming over a long period, from summer to autumn. It's ideal for growing in a large pot on a sunny patio, and makes a striking conservatory specimen in winter. For best results keep Nerium oleander 'Casablanca' at a minimum winter temperature of 10C, and water sparingly.

Family: Apocynaceae

Genus: Nerium

Species: oleander

Cultivar: Cassablanca

Plant type: Tender perennial

Flower colour: White

Foliage colour: Light green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Chalky/alkaline, Moist

Hardiness: Tender

Skill level: Beginner

Height: 180cm

Spread: 120cm

Time to plant: May to June

Flowering period: June to September

Reader reviews


My oleander has been in a pot for some years and has only flowered once and then sparsely. it now has a really bad pest infestation which I think might be scale insects. Have tried spraying with an insecticide but with no effect. Should I prune it back really hard and repot or is there any other remedy? Would be grateful for any suggestions.


i have bought an oleander plant but i am worried about how poiseness it is i have a 2 yr old grandson should i get rid of it


Yes, all parts of them are toxic, but consider other common garden plants that are partly or completely poisonous - yew, laurels, foxgloves, sweet peas, Delphiniums, Lupins - the list goes on. To be completely on the safe side you should check to see how many plants in your garden are poisonous or have poisonous parts - and remove them. It all boils down to whether your grandson is likely to eat the plant. This is highly unlikely as Oleanders apparently taste AWFUL (do not try this at home!).


Thanks for advice on overwintering. I purchased 3 from the tv & no mention was made as to hardiness of these plants except they would tolerate down to minus 6. Apparently this is wrong & they have to be in a heated situation. I hope they survive!


now looking at advert in paper for four Oleanders looking to put in garden after reading comments i will not bother


Has anyone ever experienced black spotting on the leaves of their oleander plants? I bought a new plant last summer, and it didn't flower very well. I wonder if it's a virus like canna lillies seem to be suffering from currently? Or perhaps it's the pot which is ceramic? I used to have an oleander in a terracotta pot that flowered beautifully.Any advice on what to do would be really appreciated as the plant was really quite expensive and I would hate to lose it.


I have purchased 6 oleander bushes and am not too happy to see the
condition they are in,am i being too fussy or impetious? one plant is
going brown at the tips of the leaves two have the leaves growing
crookedly I repotted them when I took delivery and fed them on Fish
and bone meal, unfortunatly there was no instructions with them,

hope you can enlighten me, thank you.

Paul Harman

I also had six oleanders which I repotted into very large pots. The advert stated that they needed little or no attention, winter tollerant down to minus 10. This was three years ago very green leaves,about 3ft tall but no flowers. One or two of the leaf ends are now going brown.
During the summer it was fed on a well known water based compost. During the winter it was put into my cold greenhouse.Still hasnt flowered ....any advice


Have just taken delivery of 6 and they look ok so far. There aren't many instructions but they do like a lot of water. I think they are ok with any soil but will be putting them in pots. Soaking in the bath at the moment but will pot today and stand them out in the air. No need to feed as they thrive on neglect. But do bring them into minimum if 10c over the winter


I bought one from the garden centre three weeks ago, it had no instructions with it, when I got it home I planted it in the garden, hopefully it will survive the winter outside as I dont have a greenhouse

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