Please identify my plant
By Lylieann
East Yorkshire,
United Kingdom 
I have had this plant a few years, but no one knows what it is. It flowers continuously (tiny yellow flowers) and has very spiny stems which grow long.
25 Mar, 2008
Answers
Thanks, Celandine, have you any tips on how to look after it. I water it when it feels dry and feed it in Spring.
Did you used to prune the long spiny spems?
Joyce
26 Mar, 2008
I think it is a yellow form of Euphorbia millii (crown of thorns) which is more often red. I had one for many years on a school windowsill-don't know if its still there.Yours looks very nice!
25 Mar, 2008