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Golden Barrel Cactus

Q.golden barrel cactus

Zone perth, western Australia | ben added on August 4, 2016 | Answered

Where the spines grow out has turned black. Can I save it?

Alisma

Certified GKH Gardening Expert

Answered on August 5, 2016

It is possible that the cactus has been damaged by freezing temperatures, by sunburn, or by a fungal rot disease.
This article may help you determine what is wrong:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/cactus-going-soft.htm

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