Care for euphorbia unispina, poissonii, and venefica

[cacti and cacti not]

I've recently been thinking about if I might want to grow one of these someday. Due to this, I've been meaning to ask: How easy or difficult are they to grow? I heard they're slow and cold-sensitive, but is there anything else to their requirements?

[Jangaudi]

They seem to be caudiciform Euphorbias, central African, with a winter dormancy. The Specks exotica care guide lists all 3 as winter dormant, with a minimum temperature of 14C. https://www.specks-exotica.com/en/cultivation_data.html
This is the case with most of those central African plants. Only issue I have myself, is trying to wake them up during spring / summer. It's not so much about daytime high, but more about nighttime lows, or highs. Even if my greenhouse heats up to 38 C during the day, if nighttime temperatures drop to 12 to 14 C the plants do nothing...for a long time. Only after a recent heat wave with nighttime temperatures of 20 to 22 did they become active. Even my Adansonias do this. I've put them indoors recently, where temperatures do not drop much at night, but don't get high during the day either, and they all of a sudden develop new leaves and stem growth
Apart from that I think Euphorbias in general are easy to grow.

[cacti and cacti not]

Thanks for the cultivation information. Sounds like they are fairly straightforward plants to grow. Even so, I still have a question. Where I live, nighttime temperatures during July and August tend to be about 16 degrees C. The daytime highs during this period, however, tend be about 30 degrees C. Furthermore, I grow all of my plants outside during the warmer parts of the year. What would this mean for me growing such plants?

[Jangaudi]

hmmmm not sure, but you live in a far warmer climate than I do, so I think you're ok.

[cacti and cacti not]

Thank you. That makes sense.

[C And D]

Denise has a couple of each type.
They seem to grow quite a bit from Spring to Fall
and now they are pretty big

They probably get watered during the winter here and there without problems

[C And D]

12/1/20, still leafed out. It will go to sleep by Xmas.

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