Ask a Question forum: white spots on Christmas cactus

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Name: Priscilla Morris
NH (Zone 5a)
plm912
Jun 24, 2016 3:44 PM CST
I usually put all my Christmas cactus's on my porch in the same place every year with no problems. The seem to thrive outdoors. I noticed on my largest plant white "bleach" marks on several of the stems. Sort of like when you spill bleach on your jeans. These are like a very pale yellowish white on the leaves and very large. Usually two or three portions of the stem. I looked for spiders or mites or other problems but couldn't find any thing. What could be wrong? I don't want to lose this plant. None of the others seem to have any problems. ,Thanks for any help, Priscilla
Priscilla
Name: Ann ~Heat zn 9, Sunset
North Fl. (Zone 8b)
Garden Sages Native Plants and Wildflowers Xeriscape Organic Gardener I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level
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flaflwrgrl
Jun 24, 2016 5:46 PM CST
Welcome! to NGA Priscilla!

Could you post a photo of the white spots? That would probably be a big help for others to ID what's going on.
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others.
~~ Sharon Brown ~~



Name: Lin
Florida (Zone 9b)
Region: United States of America Morning Glories Region: Florida Houseplants Charter ATP Member I was one of the first 300 contributors to the plant database!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
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plantladylin
Jun 24, 2016 6:07 PM CST
Hi Priscilla, Welcome! from me too.

I agree with Ann, if you can upload a photo it may help in identifying the problem with your Thanksgiving Cactus (Schlumbergera truncata). My first thought was possibly water spots but if none of your other Schlumbergera have the white spot problem and if there are no pests present and it's not due to an environmental issue (like sunburn or sudden change in temperature) the only thing I can think of is a possible fungal infection. I googled and found this photo for comparison with what you have on your plants: http://www.bing.com/images/search?q=large+white+spots+on+sch...

Member @JB grows the Holiday Cactus and may be able to offer advice.
~ Eat, Sleep .... Play in the dirt ~
Name: Jacquie (JB) Berger
Wrightstown, New Jersey (Zone 6b)

Charter ATP Member I was one of the first 300 contributors to the plant database! Region: United States of America Region: New Jersey Cactus and Succulents Tropicals
Container Gardener Hummingbirder Farmer Keeps Horses Dog Lover Birds
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JB
Jun 28, 2016 11:20 AM CST
I will ask my friends on our Holiday Cactus Group. Please let me know when the pictures arrive and I will copy them and send them on to the other list and see what they say.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Jun 28, 2016 12:31 PM CST
Welcome! the weather switched from cool and cloudy to sunny and hot then the same all over again in my part of the north. My first thought would be sunburn. Does it look anything like this, which is possible sunburn on Christmas cactus (from Missouri Botanical Garden)?

http://www.missouribotanicalgarden.org/Portals/0/Gardening/G...

[Last edited by sooby - Jun 28, 2016 12:33 PM (+)]
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Name: Lin
Florida (Zone 9b)
Region: United States of America Morning Glories Region: Florida Houseplants Charter ATP Member I was one of the first 300 contributors to the plant database!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
Image
plantladylin
Jun 28, 2016 12:34 PM CST
@sooby, that link takes us to the insect and bug ID forum. Green Grin!
~ Eat, Sleep .... Play in the dirt ~
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Jun 28, 2016 12:36 PM CST
I realized that and corrected it, apparently not quickly enough Hilarious! Thanks.

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