cactus don't look so good...

Trouble shoot problems you are having with your cactus.
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spinessa
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Joined: Thu Aug 25, 2016 1:05 pm

cactus don't look so good...

Post by spinessa »

Hello!
Can someone help me,and tell if this is fungus?
Thank you!
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teo
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Location: Lund, South Sweden

Re: cactus don't look so good...

Post by teo »

First of all: it's not a cactus but a Euphorbia (maybe horrida). Looks like some mechanical damage.
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Nic
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Location: Albion California zone 9

Re: cactus don't look so good...

Post by Nic »

That's what I thought.
There is no cactus you can't eat, but you just might regret it if you eat the wrong one.
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CactusMad
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Location: England,U.K

Re: cactus don't look so good...

Post by CactusMad »

Hi,I agree it looks like it has been damaged.The white stuff is dried latex which the plant exudes when damaged.It looks like milk and is an irritant and poisonous so be careful and wash hands after handling it.

:)
spinessa
Posts: 20
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Re: cactus don't look so good...

Post by spinessa »

Thank you guys for quick answer!!!
iann
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Re: cactus don't look so good...

Post by iann »

Hard to kill these!
--ian
spinessa
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Re: cactus don't look so good...

Post by spinessa »

Iann, in your opinion, what are "these"? Thank you!
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majcka
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Re: cactus don't look so good...

Post by majcka »

Looks like Euphorbia ferox to me.
Maja

Strange is fun, cacti are funnier!
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CactusMad
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Re: cactus don't look so good...

Post by CactusMad »

I agree with teo that it is a Euphorbia horrida,I have a few of them.

:)
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hegar
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Re: cactus don't look so good...

Post by hegar »

I would not rule out a fungus, because the dark borders around the lesions look suspicious to me.
You can find out, if a fungus is involved, in most cases by examining the discolored areas with a high quality hand lens. If a fungus is present, either the primary pathogen or a secondary one (weak pathogen or saprophyte), you should be able to see tiny spherical or elongate slit-like structures and/or a web-like, fine webbing (mycelium).
If these structures are not present, then the best thing is to do is to keep an eye out for any changes, be it an increase of the present lesion sizes or additional lesions.
I do hope, that the problem was caused by a mechanical injury, the wounds are healed and the plant continues to thrive.

Harald
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