Ask a Question forum: Mexican Fence Post Cacti

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Austin, TX
x00408
Feb 10, 2018 2:30 PM CST
Hello
We planted this Mexican Fence Post Cacti last summer and it really did great in it's current spot. We have had a cold winter for Austin, TX where the temperature dropped down into the teens. I covered our cacti but the wind damaged the top as you can see. Will it get better when the temperature gets hot again? Can I just cut off the top part? Thank you for any help.


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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Feb 10, 2018 5:54 PM CST
That is not a happy cactus. Crying But that is not wind damage, its frost bite. Is the black part soft and squishy? Or hard?

Draw a line with a Sharpy all the way around just below the black... And then watch the line. If the black continues to spread below the line, time for surgery. If it doesn't spread, leave it alone.

The top will definitely die but this is the wrong time of year to be doing surgery. Hopefully, it will just dry up.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org
Austin, TX
x00408
Feb 10, 2018 6:04 PM CST
Hello! Thank you for the reply. So good to know it is frost bite. It was first squishy but has hardened a bit; however, it has spread farther down then the first time I noticed it when the temperature dropped. Do you suggest I draw the line and monitor it for the next few weeks before the temp starts to bump up a bit? As for surgery, is it just a matter of cutting through the whole thing?
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Feb 10, 2018 6:21 PM CST
Yes, mark it now and hope for warmer weather.

Yes, surgery is cutting it off but you have to keep cutting until there is no black/brown in the center of the stem. Use a sharp knife, make clean cuts and sterilize you knife between cuts so you don't spread the rot.

Hopefully, it won't come to that.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org
Austin, TX
x00408
Apr 9, 2018 9:25 AM CST
Hello!

New pictures of the cactus. The rot has not spread any further. Do you suggest cutting the top off or letting it alone? Thank you!

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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Apr 9, 2018 10:13 AM CST
Its looking good - I would leave it alone.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org

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