Frost bitten cactus getting brown, what shall I do next?

Well I left my columnar fence post type cactus out when it frosted and now some of the cactus is turning brown. I'm not sure of the species, but it's a very common variety. In any case I'd love some advice on what to do next. %80 of the cactus is fine (it stands about 4 feet tall) but the top sections are pretty brown and getting rotten. Should I remove the rotted sections of the cactus or leave them? Will leaving the rotted sections create problems for the rest of the cactus? Any advice will be very helpful. I've learned my lesson this time. Thanks!!!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
If it were mine I'd trim back to sound tissue and I'd be sure to clean the tool between cuts with bleach or alcohol. The cut surface should suberize ( form a hard callous) and it may branch below the cut when growth resumes. Keep it on the dry side. Are you sure it's a cactus and not some euphorbia?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Actually you are right. It appears to be a Euphorbia Trigonum. If not it's very close to it. Would that change the scenario at all? Thanks for your quick reply!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
That would be Euphorbia trigona.
http://images.google.com/images?q=euphorbia+trigona&hl=en&btnG=Search+Images
Since its a tropical species and not at all cold hardy, you probably succeeded in killing it all by yourself.
Trying to save it is a waste of time.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
just a quick question, Cereus......I have many kinds of thorny Euphorbia's. (their names are on the pieces of vinyl blinds the gardener wrote them on and it's 2 a.m, and I'm too tired to go out there and hunt for them in the dark) I have the variegated one that is white on one side and green on the other (don't flame me, I am just burnt out and don't feel like writing their specific names.....) I have one that has reddish yellow leaves, no spines, all kinds of them. I have left them outside and it's getting down to 35o tonight. You think I've done terminal damage to them? I've got to prepare a good spot for them to winter in this dry house with inadequate sunlight and inadequate windows. Where would YOU put them for the winter in a dry, electric heat pump heated house for the winter if they managed to go unscathed in these sparce cold snaps? The last cold was a dry cold as we were in a drought for over two months, but tonight it's humid because we finally got some rain last night and I never thought.............I just need your feedback on a better location to put them. I do have very sunny southern window in den, and florescent lights in the downstairs that are two foot from the top of a chest of drawers I place a thick plastic tray on top of to catch moisture. Any help would be greatly appreciated. Tomorrow the Euphorbia's come inside is why I am asking. If I haven't managed to kill the red one I will be thankful. The two toned white and green one I can replace if I have lost it. I apparently have over 11 different kinds of Euphorbia's and I might have more than that if I counted them..........I'll describe the rest tomorrow to give you an idea. thanks for your patience and expertise. madgardener zone 7, Eastern Tennessee, Sunset zone 36

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
You better bring them indoors today.
I brought all my tender plants indoors before Halloween.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

thanks. I tucked the red and yellow Euphorbia under the roof on the western kitchen deck on the potting table. Brought in the split leaf philodendrum, and the vining split leaf phil. The variegated geranium (pelargonium) got nipped as it hung on the gutter on the southern side of the house, so I'll shake the soil from the roots and bag it and hang it upside down in the upstairs and hope it keeps until next spring like my grandmammy usta do. The cactus are all fine, but I am now figuring out the placement of the racks and iron ringed plant curtain. (the rings hook over the iron grids, which is free standing like a curtain that I found a couple few years ago in a Service Merchandise when it was going outa business, got solid iron, plant dividers for $25 each and got two of them. One stays outside under protection, the other comes inside to hold the assorted clay potted succulents and cacti in front of the den's eastern door.
the euphorbia's are desperate for light. I need to keep an eye on them during the winter so as not to lose them. Too unusual, and the gardener who gave them to me ordered them special. It's been so unseasonably warm here is why all mine are still out. Usually by Halloween I, too have moved all my tenders inside. I still have all the downstairs tropicals to drag in the basement! sigh.......thanks Cerieus, for the feedback. Plants coming in this weekend despite the comfortable and mid 60's and low 40's evenings for the next six days. (this global warming effect isn't thrilling me, it's making me lazy with normal activities regarding my houseplants!)
madgardener
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Hmm well that seems a little extreme considering it's only 20% of the plant that's damaged.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Couldn't I just remove the brown portions of the plant? It's mostly the top portion that was effected. Additional feedback would be much appreciated.
snipped-for-privacy@gmail.com wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Rot spreads throughout the cortex of the plant long before you see the signs of damage.
Do whatever you want but you may just be fooling yourself.
wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

have to side with Cereus on this one. By the time I discover rot, it's usually killed off the remaining portion of the cactus and nothing on the rest of the plant can be saved. You can seperate it from the rest of your plants, cut it way back below the rot and hope for the best, just don't be surprised by the smelly death of the rest of the plant. You might get lucky, but you at least want to try. I've done the same and learned from my folly. And it won't be the last time one of mine gets rot as well.....I'm a well known murderer of cacti and succulents and the occaisonal tropical houseplant. I never give up...... madgardener whose love of all things horticultural still keeps her way too busy with mucking about with the affairs of these plants.............I just bought two desperately needing attention spider plants,one was just potbound and the pot was broken, the other's parent plants in the pots were yellow and almost gone from a frost at the Lowes in East Knoxville but had at least 75 extremely healthy and well rooted babies hangiing in great clusters on many, many stems that just needed clipping and repotting. So I bought them both for $2.25 total (the broken potted one was 50c, the other was let got for $1.75 when I looked at the receipt). by the time I repotted the healthy one, and the babies, I wound up with SIX pots of spider plants~ so two are going to a gardening friend next week to a good home, the others will reside with me this winter hopefully growing into healthy pots for springtime. sometimes a simple houseplant will add a bit of light and simple enjoyment to the collection.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Thanks for the reply Madgardener! I cut back the plant but it doesn't look good. Oh well! Live and learn! I won't chance any frost next time. I'm the same way though. I remember picking a piece of Wandering Jew that dropped off someones plant at the grocery store. 2 years later the thing was huge!
madgardener wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Here we go with the "Wandering Jew" quip again.
You shall be called the "murdering misanthrope"!!!

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Site Timeline

Related Threads

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.