barrel cacti problem

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Mandy
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barrel cacti problem

Postby Mandy » Tue May 08, 2018 7:42 pm

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, this is the problem over winter my barrel cacti as got a orange crust which as spreed around it. is this cold damage or fungal, can it be treated with anything , i would hate to lose it. any help would be great, i have lots to learn. thankyou.
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Peter
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Re: barrel cacti problem

Postby Peter » Tue May 08, 2018 8:19 pm

It could be cold - however sometimes it just happens for no particular reason. There's no real cure for this marking; it will appear less as the plant grows.
Mike
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Re: barrel cacti problem

Postby Mike » Tue May 08, 2018 8:31 pm

I think cold could be the source of the problem. I do remember hearing somewhere that the white-spined forms of Echinocactus grusonii are a little more sensitive that the normal form, but I don't know if that's true.
Mike
Based in Wiltshire and growing a mix of cacti and succulents.
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DaveW
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Re: barrel cacti problem

Postby DaveW » Tue May 08, 2018 8:36 pm

Often cold and damp since our winters are humid as well as cold. Sometimes just putting a sheet of newspaper over the plants on a cold night, or even on a cold day in winter will prevent it. You can even leave them covered up for a week in a cold snap with no problem if they are not growing, since they will not etiolate..

From what I have read young grusonii's are more prone to it than more mature plants like yours.
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Mandy
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Re: barrel cacti problem

Postby Mandy » Tue May 08, 2018 8:36 pm

thankyou. youve made me feal alot better, i was starting to worry.
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Keith H
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Re: barrel cacti problem

Postby Keith H » Tue May 08, 2018 10:47 pm

My three mature plants, one white spined and two normal have been down to just below 5 deg.C for the last four years with no ill effect, I don't think they are as sensitive as younger plants.
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