Ask a Question forum: San Pedro changing colour

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Finland
Beyote
Jan 19, 2018 9:03 AM CST
Hello to everyone!

I think I have a problem with my san Pedro. The problem came after he fell and before re-potting.
Problem is that the green colour is getting lighter and there is lighter and darker green spots on the cactus.
Other problem is the spike if he fell then one of his spike get hurt. Now around the spike are yellow.

I do not now. Do I over thinking or do I need to cut the spike away?
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[Last edited by Beyote - Jan 19, 2018 9:11 AM (+)]
Give a thumbs up | Quote | Post #1623799 (1)
Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Jan 19, 2018 9:44 AM CST
She's growing new sproutsπŸ‘. Remove crown if desired. The yellow has me concerned . It is winter in Finland, isn't it ? Yellow could be, needs more lite, poor draining soil, no drain hole, or biggest killer, to much water 😞 !!! They need to drain fast, and dry out well before watering.
Stick a bbq skewer in soil, if it comes out wet, don't water.
When you do water, water should run out of drain hole, in less than 30 seconds.
😎😎😎
Anything i say, could be misrepresented, or wrong.
Name: greene
Savannah, GA (Sunset 28) (Zone 8b)
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greene
Jan 19, 2018 9:53 AM CST
@Baja_Costero
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"
Finland
Beyote
Jan 19, 2018 9:57 AM CST
Thank you for answering.

Yes it is witer over here. Actually Total Winter Caos Smiling
The pot has a one drainig hole on pottom. Yes the soil should be better... I think there should be permiit inside the soil but at now there has not. I think it is not good to change this soil in Winter.... And I tested.
Also wooden bbc stick does not getting wet if I but it in the soil it is dry. Do I have to water it in Winter again?
Finland
Beyote
Jan 19, 2018 10:03 AM CST
I am really worrieda about the yellow spot on the San Pedros foot.
Can someone suggest that do I cut it and how do I do it? Or is it disappear itself?
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Name: Baja
Baja California (Zone 11b)
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Baja_Costero
Jan 19, 2018 10:11 AM CST
It looks like there is a cactus grafted on top of the one at the base. What does the top of the plant look like?

This time of year in Finland, the situation is difficult for cacti. There is not enough light and the temperatures may be cold enough to make them quite sensitive to rot in response to excess moisture. Make sure your plant has the most light possible (right by a south facing window) and even then you probably need some artificial light to help it out.

It's probably best to leave the plant alone at this point and not change the soil until conditions change in the spring. The color change in the stem may be a problem if it spreads, so keep an eye on that. Do not water very often (maybe once a month) until spring, and make sure the pot does not sit in standing water afterwards. I don't think cutting into the stem right there at the base is going to be helpful, because it will affect stability (plant will fall over once it gets tall and heavy) and because you may actually make the situation worse by spreading the rot (if that's what it is).

There is still hope but you have to be very patient and wait until spring before you know what will happen.
Finland
Beyote
Jan 19, 2018 10:21 AM CST
Yes there is another problem what I just saw and it is not good aswell.
One of the sprout want to fall. Maybe it has get hurt if it was re potted...
Some pictures. From top.
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Finland
Beyote
Jan 19, 2018 10:27 AM CST
Near the rotten sprout area, head is soft and wierd not like some other places from Beyote. Do I have to cut this sprout away and clean with alcohol?
I read somewhere that have to put ash in the cuted place?

Thank you for you anwsers.
Name: Baja
Baja California (Zone 11b)
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Baja_Costero
Jan 19, 2018 11:00 AM CST
Those pictures were very helpful. Interesting plant you've got.

Yes, I would try to cut that part away. Try to cut through healthy tissue around the soft rotten part, and if you need to make more than one cut, you should clean the knife with alcohol in between. The idea is to leave only healthy parts on the plant in that area, but avoid introducing rot from the soft part in the process. I hope that is clear.

If there is any way you can provide more light, that would make a huge difference.
Finland
Beyote
Jan 19, 2018 11:13 AM CST
If it is need to buy a lamp. Then it must be done. What lamp should be done to this job. I thought maybe I can buy something in amazon or e bay. At now the plant has to get trought with a normal desk lamp.
Alcohol, must it be over 40%?
Do I have to clean the cut, after cutting, with alcohol, or put there ash to dry the cutted area?
Name: Baja
Baja California (Zone 11b)
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Baja_Costero
Jan 19, 2018 11:20 AM CST
I would let the cut surface dry and heal without any special treatment. Good airflow helps. I'm guessing here, but the alcohol would probably just dehydrate the plant, and ash is usually quite alkaline so I don't think that would be helpful either.

I use 70% alcohol to sterilize tools and kill bugs. If you rinse the knife after each cut, you can probably use vodka to good effect afterwards. Just take your time and be careful, mainly. Smiling

Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Jan 19, 2018 11:22 AM CST
Ok. Now I see, it's, grafted.
Take broken sprout off and root it.
I'd use a chisel, small tip screw driver, or drill to get gravel off top, roots need air, plus glued on rocks, are forcing water to only wet the edges of pot.
When time to water, soak pot in pail of water, up to rim of pot for 20 minutes, then let drain well.
😎😎😎
Anything i say, could be misrepresented, or wrong.
Finland
Beyote
Jan 19, 2018 11:24 AM CST
Okay.
Thank you very much for answers. This was very helpful. Let see what is happening in next weekend.
Name: Celia
West Valley City, Utah (Zone 7a)
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Zencat
Jan 19, 2018 11:44 AM CST
Please keep the pictures coming during the process. We would like to see how it progresses.
Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Jan 19, 2018 12:03 PM CST
Oops ! Got you mixed up with another question I had just answered, who had glued on rocks, and no drainage hole. Sorry. I'm back on your track now, after finding my goof up.

It is elongated , due to low light.
Wintertime , very little water required. If she is firm and not shriveled, I wouldn't water yet.
If she starts to shrivel, not to worry, she'll puff right back up, upon watering.
Anything i say, could be misrepresented, or wrong.
Finland
Beyote
Jan 21, 2018 12:04 PM CST
Hello

It has been few day now. I Have now some vodka and good knife. It was difficult surgery but I think I done it.
And the San bedro is worser I think... Becose the brown spot is bigger than 2 days ago. But what I think is good. That it is not soft around the spikeanymore.

Do I have to take off those black rocks?
Some pictures.


When do I need to water him?
Last time was last sunday 14.1
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[Last edited by Beyote - Jan 21, 2018 2:05 PM (+)]
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Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Jan 21, 2018 4:20 PM CST
On the cheep ? Get a clamp on fixture/reflector and an LED daylight bulb. I have a GE, daylite, LED 15 watt, that replaces a 100 watt bulb, rated at 5000 K. Allthough 6500 k is best.
Bulb doesn't get hot. Place bulb, one inch above or to side of catus, leave on for 16 hours a day.

Alcohol, was to clean knife, not to put on catus. It might of made brown spot worse, but, I think it's just healing.

One week since watering is to soon to water, especially in winter.
Remember when you watered last.
When it starts to look shriveled some, then water. Then you will have a baseline, for winter watering.

Glad you found no rot.

PS : Most of those grafted catus don't survive more than a few years. Hence, I said to root broken leaf.







Anything i say, could be misrepresented, or wrong.
Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Bromeliad
Hummingbirder Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier Forum moderator
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Baja_Costero
Jan 21, 2018 4:26 PM CST
It looks like there is some rotten tissue (yellow-brown color) behind your cut, perhaps all the way through the stem... I'm not sure you cut enough out of the plant. Judging from the wrinkles in the stem, it looks like the affected (rotten) part extends well around the part you cut out, even if it is not soft (yet) to the touch.

You can leave it as is, and see how it recovers. The danger of cutting even more deeply is you might not have anything left afterwards. Smiling

And yes, the bottom part does not look good. The rot there may actually connect with the part above through the inside of the plant. It's hard to know. This whole situation will probably resolve itself one way or another by spring.

Do not water again for a month or more.
[Last edited by Baja_Costero - Jan 21, 2018 4:26 PM (+)]
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Finland
Beyote
Jan 21, 2018 4:29 PM CST
Thank you for answering and helping Smiling
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Jan 21, 2018 4:36 PM CST
That's one weird looking cactus.

You didn't get all the rot and the base cactus is also rotting. Cactus are green inside - there should be no brown or yellow. I'm really not sure you will manage to save any of this plant as it looks as though the rot is all the way up the center of both cactus. The grafted cactus actually roots into the recipient cactus so their fates are intertwined.

If any of the little offsets can be pulled off and are green at the base, they have a chance of rooting.

BTW Philip, A grafted cactus where both halves are photosynthesizing will live forever.
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[Last edited by DaisyI - Jan 31, 2018 12:04 PM (+)]
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