My Sick Euphorbia Lactea

My cactus is sick. A few weeks ago it was fine and beautiful, maybe a few tiny (pin prick or freckle sized) raspberry red dots on it, then – BAM – I looked at it yesterday and could barely believe it was the same plant. I don’t know what to do to treat this plant and protect my other plants.

20140312_190734 20140314_121706

It has strange rings (brown filled with raspberry/pink edges) and brown spreading patches. I’ve already looked online a little and couldn’t find anything like it.

Is it terminal and I should start chopping off branches to try to grow a new plant before the disease spreads to the entire plant? Do I isolate and treat all the plants in the one pot or is this a Euphorbia-only fungus? Isolate all the plants within a ten foot radius?

Also, will I get a response via email or will I have to check the blog? Both?

Katie

Katie,

It looks like a virus from the ring pattern. I don’t know what caused it but it could have been from a sunburn – if the plant was put out into direct sun after having been inside or protected, or if it got turned around. If the infection is on one side of the plant only then that indicates it was caused by a sunburn.

You can try to treat it – I can recommend Oxidate by Biosafe, which is a ready to use disease control, or Neem Oil, both of which we carry. But the prognosis is only 50/50. If the plant survives it will have scarring.

Go ahead and isolate the plant in the meantime.

You can also check out the blog now – the answer is there too. Share with friends!

Peter