Garden Euphorbia Mold, Rot? help!

Hi everyone

I have 3 Euphorbia growing in raised beds which up until last week were growing very well and looking great. The beds are well drained and they were happily growing with Honeysuckle, Jasmine and
Ceanothus. However in the last few days I have noticed that all 3 euphorbia are going brown. Closer inspection shows either rot or fungus on the stems.

I have just treated them with some fungus spray but they appear to be deteriorating at a rapid rate. Does anyone have any suggestions or advice?

 

I think you maybe concentrating on the spent/ finished flower stems, I usually cut them off once finished.

It look s a bit like mildew, maybe they are a bit dry?

What is the new growth looking like?

 

Yes, looks like the old flower stems naturally dying back so just need cutting back.

 

Appreciate the quick responses. New growth looks ok but limited. The dripper running through the bed is giving enough water i think so shouldn’t be dry (that’s what I first thought when seeing them and gave them a good soak). You are both probably right though they just need cutting back, in my head I thought they would last a bit longer.

I also saw what looked like mold and panicked a bit!

Will cut back to leaves and see how we get on. Thanks again.

 

Some varieties do look a bit tired after flowering but then pick up again