Star plant for May

I'm a really big Euphorbia fan and have no resistance over buying them. This was one I bought last year although it didn't do that well last spring (it was only wee). This year I moved it to a more central location, behind the washing line, which I call my 'long border' (although it doesn't quite look like Monty's). This year it's been stunning and so qualifies for my new 'star plant' category. I'm hoping it takes over like Robbiae. It's full name (lest I forget) is Euphorbia griffithii 'Fireglow'.