We Get Questions


Hello,

Yesterday I bumped my cactus, Mr. Popcorn, and on of his arms fell off/over. I’m not sure why…is this rot? What should I do about it?

IMG_2228

The soil is the soil he came with, with a little from the woods that I got several weeks ago and mixed in. Do I need to get a special kind? Also, could you tell me what kind he is? I’ve tried researching it but I’ve had little success.

IMG_2236

Here are some pictures.

Thank you so much!
Monica
P.S. Does he look healthy? Should he be greener?

Monica,

Your cactus is a Mammillaria elongata. The soil mix is too rich, and looks too wet. The arm has fallen over because of rot which was caused by too much water. Generally we recommend a fast draining cactus soil, no forest products. Water about every 3 weeks, and only a little more often in summer if it is in a hot and sunny location. Make sure the soil has completely dried out before the next watering.

You’ll need to cut out the rotted arm, digging out any rot in the soil too. I recommend spraying the base of the remaining plant with Neem Oil which is a natural fungicide and should help keep the rest of the plant from rotting.

Good luck

Peter


    
    
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