Yellowing Cactus can use your help...

Trouble shoot problems you are having with your cactus.
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CactusIndia
Posts: 20
Joined: Sun Jul 17, 2016 5:31 pm

Yellowing Cactus can use your help...

Post by CactusIndia »

Inherited this cactus which was potted in a clay bowl-pot too large for it. What do you think is the problem? Is it overwatering/wetness?
The white spots were scales, i removed them a toothbrush and sprayed insecticide. Lives in a glasshouse, humid climate, high temps of India.

Also any id on what cactus this is?
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greenknight
Posts: 4813
Joined: Tue Apr 30, 2013 4:18 am
Location: SW Washington State zone 8b

Re: Yellowing Cactus can use your help...

Post by greenknight »

Looks like a Coryphantha, maybe elephantidens.

Cacti with a tap root, like this one, are especially vulnerable to over-watering, should be potted in an extra free-draining mix with little or no organic matter - especially in a humid climate. Should be in a deeper, narrower pot rather than a shallow bowl, to give room for the tap root.

It appears to have lost quite a few roots - along with the insect infestation, that would account for its sickly appearance. It should recover given better treatment.
Spence :mrgreen:
CactusIndia
Posts: 20
Joined: Sun Jul 17, 2016 5:31 pm

Re: Yellowing Cactus can use your help...

Post by CactusIndia »

Thanks a lot Greenknight. Changed it to a deeper smaller pot, befitting its size. Also added more gravel to the mix. If it does recover, I will post a pic and thank again :)
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