What’s Wrong With My Cactus

Question

Recently bought this cactus, it was beautiful and healthy when I brought it home. It’s been sitting in the shade under a crepe myrtle and it’s dropped most of its stalk of flowers and it looks to me like a fungus or insect is attacking it. Can you help please ?

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Answer 1

It will appreciate being in bright, full sun, out from under the shrub. They appreciate a thorough watering, but the soil must dry out between waterings.

There are many in the genus Senecio, but I am not sure exactly which this is. They all have very similar care, though.

https://www.gardeningknowhow.com/ornamental/cacti-succulents/senecio-chalk-sticks/what-is-senecio.htm