Where are you located roughly? It could be a Euphorbia, perhaps one such as Euphorbia 'First Blush'.

Zone 8 Gibsons BC

Does look like Lysimachia punctata 'Alexander' when it first comes up.

I grow and considered L. p. 'Alexander' but they emerge as very stout nubs with no stem showing.

Sure looks like Euphorbia 'First Blush' to me, I have several of these no fuss easy care perennials that are quite the show offs throughout the entire growing season, I just need a few more of them!

I hope it is not this, because it can cause a world of trouble.

Houttuynia cordata 'Chameleon'

No. Luckily it's not Houttynia.

Yes Twros it is my favorite of the Euphorbia epithymoides (polychroma). I know I will add it to other spots in the garden as well!

deerwood if your name is indicative of your garden these plants are never bothered by deer, rabbits or any other pest that walks or flies.

Peren.all ... indeed, these are excellent low maintenance plants. They also seem to prefer soils that are not overly rich, otherwise problems with splaying and breakage can occur. Such was the troubles I was having with 'Bonfire', plants had become overly lush and stems would break off at the base during stormy conditions, I remedied that by placing them in non amended soil.

Thanks for all your suggestions. Euphoria looks like the winner. Having looked up this perennial, it seems very likely. A few weeks should confirm it. Cheers!

Euphoria is the winner lol. Don't you love spellchecker?

LOL floral! I think we all feel euphoria over Euphorbia.