Nerium Oleander

I bought two oleander plants last spring.
Supposedly they were bred for growing in northern areas in summer, with winter protection.
Both have now got signs of a kind of fungus, the red one has almost been destroyed.
It forms in the stems, the growth above appearing to be alive for a while until it wilts and dies.
This is whats left of the red one.

The white one is better but is also showing signs,




Although I've had flowering problems with the standard typers of oleander, I've never had this one.

Any ideas

 

Hello pete.

As you probably know, Oleanders are fairly pest and disease free with occasional yellowing of the leaves.

One of mine suffers with mealy bugs/aphids every year which I have to blast off with the hose but the shrub doesn't suffer particularly, just a few lost leaves.

I've looked in my various books and the only thing I can come up with is Oleander Leaf Scorch, which is a bacterial problem. It seems pretty confined to California so I couldn't imagine how yours would be infected. Perhaps you have already investigated this?

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7480.html

 

Doesn't look too good Pete, I haven't seen any diseases on Oleanders so can't offer any help.

At least one of mine that has been outside for two years now has a bud developing,
it was a cutting from a plant growing outside at Exeter Uni but I doubt that that has any bearing on it's hardiness.

 

thanks both of you.
The plants were bought from a garden centre, but direct imports from Holland.

I know it was a bad summer last year, but they performed badly, for plants bred for our climate.
They came from here,
www.oleandercorazon.com