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Milo

Is this fungal infection on my Astrophytum?

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I'd rather not resort to extensive surgery/grafting unless deemed absolutely necessary. The two little orange spots aren't soft as far as I can feel, but they don't seem right to me. Maybe I'm concerned over something I shouldn't be, but I'm not sure. Any help is appreciated. Thank you.post-17196-0-12233300-1460045974_thumb.p

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Yes, could be fungal or viral. Can you rule out sun burn? But it´s actually pretty typical for fungal infections to start down there.

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It was a nice gradual move into full sun, and all my other Astrophytum are doing well in terms of keeping from becoming sunburned. My heart sank when I saw it. Usually that color orange has led to some unfortunate losses... Should I try removing the affected areas?

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whats underneath the white rocks?

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Do you mean soil composition? Or to check for fungal infection? I'm planning on uprooting it to take a look after work today. It's growing in mostly pumice, with some coarse mineral sand, perlite, and a little bit of compost. Very little organic matter.

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post-17196-0-47380700-1460080761_thumb.p

post-17196-0-25019300-1460080789_thumb.p

The bottom isn't soft at all. There are a total of 3 orange spots on the cactus, all above soil level.

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I had this problem and also with myriostigma, mine started just like yours. Notably it has not spread to the others. It's still hard and if it is spreading it's very slowly. I'm leaning towards insect puncture. It hasn't had a water for a long time and is in pure mineral soil.

post-16958-0-27322400-1460093081_thumb.j

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Ok. I'll hold off a bit and see if it spreads. Glad to hear there may be a chance for it yet. Thanks all.

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Hey man,

I had something very similair on my Trichs, discolored spots which later turned black later and just calloused over.

From my research on the webs it's most likely it was fungal. Hope that helps

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Mate keep it dry.... sit wait and watch .

But by the others in your collection you already know that...

Caveat... Im no expert... but it dosent look infectious to me!

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I won't be watering it for quite a while. The replies make me more hopeful. Thanks. Hoping it won't spread.

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Treat it with a sulphur dusting and it will be fine. I just dust it on and then work it into the bad spots with a paint brush. Hope this helps.

HN

Edited by Hellonasty
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