Cactus and Succulents forum: Please sate my curiosity- most poisonous euphorbia

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Name: Stefan
SE europe(balkans) (Zone 6b)
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skopjecollection
May 2, 2018 11:25 AM CST

On gardenweb/houzz topic https://www.gardenweb.com/disc...

there is mention in the comments of E. adbelkuri being the third / or most poisonous euphorbia. My questions is this: which are the other species of(succulent) euphorbia occupying places 1-10 as most poisonous?

Know its an old topic, but please humor me.

I know manichel is probably the most poisonous euphorbid, and ricinus is related, but this is because im a succulent grower, and those are not succulents.
Name: Baja
Baja California (Zone 11b)
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Baja_Costero
May 2, 2018 12:39 PM CST

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I don't think there's a clear winner. The toxicity of Euphorbia juice also varies depending on the recipient.

These plants are named for their poisonous/irritating properties.



The first one is native to the region, the second one is part of a group of about 5 West African Euphorbias with similar properties (including unispina, poissonii, and a couple more). Its name means "poison-making"; this and others in the group were used by locals as a pesticide.

This plant is named for its highly toxic sap



and one of the active ingredients has a very specific mode of action like hot chile peppers, only 1000x as strong.

https://en.wikipedia.org/wiki/...
[Last edited by Baja_Costero - May 2, 2018 1:18 PM (+)]
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Name: Stefan
SE europe(balkans) (Zone 6b)
Cactus and Succulents Orchids Plant Lover: Loves 'em all! Garden Procrastinator Bulbs Foliage Fan
Purslane Bromeliad Container Gardener Houseplants Sedums Sempervivums
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skopjecollection
May 2, 2018 12:47 PM CST
So, from your reply, euphorbias that have a pachypodium-like appearance are the most poisonous... that leaves us with adbekuri and resinifera.(i really want to grow the latter- ive seen a specimen owned by this office,,,,)
Name: Stefan
SE europe(balkans) (Zone 6b)
Cactus and Succulents Orchids Plant Lover: Loves 'em all! Garden Procrastinator Bulbs Foliage Fan
Purslane Bromeliad Container Gardener Houseplants Sedums Sempervivums
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skopjecollection
May 2, 2018 1:45 PM CST
My worst encounter with a plant was when i was cleaning rose hips from seeds. And the fibers inside...... Grumbling Glochids are laughing stock compared to those. At least you can pull most of them out.
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 3, 2018 6:51 PM CST

Moderator

I'm not sure about abdelkuri being all that toxic, given the competition. It's toxic to livestock but a lot of the others are too. Maybe the prestige and selectivity of the species (being extremely uncommon in cultivation) gives it additional magical properties? Smiling Just guessing here.

Two different clones of resinifera here in the public garden... not getting much water, growing pretty slowly. That's a fun plant to grow but it needs a lot of light, and it does have the potential to grow big. On the second, smaller plant you can still clearly identify the original stem used to start it, a really tall thing compared to the rest of the growth, a clear sign of greenhouse cultivation (which ended shortly after the cutting was rooted).

Thumb of 2018-05-04/Baja_Costero/45c578 Thumb of 2018-05-04/Baja_Costero/df63bc

This question of toxicity that you bring up is actually quite practical as a gardening matter. We have ground squirrels and hares here which will eat nearly anything if they are sufficiently hungry/thirsty. But not the succulent Euphorbias (at least the ones I've tried). They'll be nibbled here and there but I get the sense that the first bite is the last bite. One time a bunny grazed on a polygona and actually ate a whole serving. I suspect that may have been a fatal dose because there was no repeat.
[Last edited by Baja_Costero - May 3, 2018 7:36 PM (+)]
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Name: Stefan
SE europe(balkans) (Zone 6b)
Cactus and Succulents Orchids Plant Lover: Loves 'em all! Garden Procrastinator Bulbs Foliage Fan
Purslane Bromeliad Container Gardener Houseplants Sedums Sempervivums
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skopjecollection
May 3, 2018 9:41 PM CST
Adbekuri is the only one with yellow sap....
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 3, 2018 9:54 PM CST

Moderator

Interesting.

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