I have a picture of a crown of thorns, My plant is yellow.

I have no idea as to name, and don't want to put it where it doesn't belong. Have a red one too.

They like to be fairly dry, and in full sun. I don't know the specific cultivar's name.

Yes, it looks like Euphorbia milii. The blooms come in red, white, pink orange and even pale yellow:

http://www.floridata.com/ref/e...

So you think They might like the picture? It is a large plant cause It's been in same pot for awhile. But I put it outside and it loves it. I have a red one too.