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The Corroboree

Cacti yellow discolouration


mineral

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Hi everyone. Sorry if there's a specific sub forum for this and I'm in the wrong place.

Not the best pictures of the marks on the cactus because they weren't taken specifically for this topic. I'm a little concerned about the yellowish spots on the base of the cactus. I think there are a few new ones as well, but I'm not certain. They were there when I bought it, by the way.

Any ideas?

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The yellowing at the top is sunburn perhaps. I wouldn't worry too much about the spots near the base - they just look like scarring to me.

You haven't had any orange or black spots have you?

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It looks like typical scarring to me. Absolutely nothing to worry about in my experience. Looks like it's growing nicely as well.

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yup its probably rhizoctonia aerial blight just tasting the cacti, LoL

as a side note, I'd strongly recommend you ditch that potting soil and go with something that has less than 20% 'composted forest products' in it.

more than likely the 'high acidic content' potting soil is a major contributing factor in the tip yellowing.

you also need to ditch the clay saucer under the pot & you really should provide better drainage, either by choice of pot, potting soil, or ideally, both.

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