Ask a Question forum→HELP!! Euphorbia trigona DYING?

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France
charlac
May 10, 2020 8:23 AM CST
I don't know what's happening to my E trig. Is it bugs? Is it dying? I repotted it a month ago and seems like it's not doing too well. There are fungus gnats, which I'm trying to get rid of. But can the gnats be affecting the plant? Thanks in advance for anyones help!

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Name: Will Creed
NYC
Prof. plant consultant & educator
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WillC
May 10, 2020 9:53 AM CST
Euphorbias are easily damaged during repotting. Did you remove some of the soil when you repotted or did you leave the original rootball intact? What was your reason for repotting?

The fungus gnats were probably introduced with the fresh soil you used. Fungus gnats will not ham the plant but they are a nuisance to have around the house.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care
Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Hummingbirder
Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier Forum moderator Plant Database Moderator
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Baja_Costero
May 10, 2020 10:36 AM CST
It looks fine to me. The pot is a good size for the plant, which is not E. trigona but another Euphorbia (a much larger one from the looks of things). I would not worry about the gnats (more a nuisance than a threat to the plant, like Will says) but we can suggest ways to treat that problem if you would like.

Welcome!
France
charlac
May 11, 2020 8:40 AM CST
Thank you for your replies!

So this plant was given to me in September. I repotted it because it was in a smaller plastic pot which wasn't stable anymore and I switched to a terracotta pot. I kept some of the soil from the previous owner and added more of cactus soil. I'm not sure why the cactus soil isn't drying up fast enough because I just checked it and it's still moist (it's been 2 weeks since I watered it), maybe that's the reason there are fungus gnats?? I think I loosened the root ball but I don't remember..

It looks like the plant is either 'melting its skin' or something is eating it. Also the thorns are disappearing.

Do you know what kind of Euphorbia it is?

Thank you again!!
Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
May 11, 2020 8:48 AM CST
Apparently, the soil you used did not have enough porous material mixed in to let it dry out sooner. That soil is also the likely source of the gnat larvae.

The other issues you referenced may be a consequence of root damage that occurred during repotting.

For future reference, the original pot could have been inserted into a larger heavier terra cotta pot to provide more stability. Repotting is not as simple or easy as it appears and many things can go wrong.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care
Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Hummingbirder
Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier Forum moderator Plant Database Moderator
Image
Baja_Costero
May 11, 2020 10:24 AM CST
I see no problem with the repot or the container the plant ended up in. The soil is not drying out fast enough because the plant is not getting enough light, I'm guessing. It should be right in front of your sunniest unobstructed southerly facing window, and "see" the sun for hours a day year round. Strong light will work in synergy with the clay pot to dry out the soil in a timely manner. It will also be greatly beneficial to the continued long term health of the plant. Close attention to light will make a huge difference in late fall and winter when light is always limiting indoors, especially.
France
charlac
May 11, 2020 12:59 PM CST
Thank you Will. I'll keep that in mind! I will definitely not be repotting this plant in a very long time. I hope I didn't hurt it too much.

Thank you Baja, I just moved it by a window with lots of light! I hope it'll prefer that spot. I guess time will tell.
[Last edited by charlac - May 11, 2020 1:02 PM (+)]
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