The previous owners of our garden went a bit mad with crocosmia lucifer and a pink hardy geranium, not sure which one. The crocosmia is down to one big clump now, which I don’t mind, but the geraniums just keep reappearing somewhere else, when I think I’ve dug it out.
Carmarthenshire (mild, wet, windy). Loam over shale, very slightly sloping, so free draining. Mildly acidic or neutral.
I have a variegated form called L. Alexander, which is not at all invasive with me, unlike L. Firecracker, but I did manage to get rid of that with glyphosate.
I hate that brash, yellow loosestrife, but it was useful at my last house as it was one of the few things the rabbits didn't eat. I'd happily have traded with them to leave all the other plants and eaten that though It grows in hedgerows round here too.
Firecracker is a nuisance, without doubt, though.
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...
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https://www.rhs.org.uk/plants/10634/Lysimachia-punctata-L/Details
It has a white flowered relative which is, in my opinion, much more attractive but can also get too happy - https://www.rhs.org.uk/Plants/10629/Lysimachia-clethroides/Details and there is a purple flowered version called Beaujolais which is short lived and much less invasive - https://www.rhs.org.uk/Plants/137440/i-Lysimachia-atropurpurea-i-Beaujolais/Details
It grows in hedgerows round here too.
Firecracker is a nuisance, without doubt, though.
I live in west central Scotland - not where that photo is...