Navvy's Rose

I found this lovely stand of flowers on an evening walk in Bolsta with our very old friends Lis and Paco. Normally they live in Porto but most summers they return to their house In Bolsta to enjoy the Swedish summer and meet old friends.
I've been reading Wikipedia to learn about this wild flower with many names (Chamaenerion angustifolium).  I learned about the ecological usefulness of such a weed and the culinary uses too.
Most of the names I already knew; fireweed in N America because it appears after forest fires; bombweed after WWII in Britain for similar reasons; navvy's rose (rallarros) in Sweden because it followed the newly built railways in the 19th C; rosebay willowherb in the UK because of the similarity(?) to wild roses and the bay leaf.
It was interesting to read that it was a rare plant in Britain during the 18th C and then suddenly was found everywhere, shortly after the railway building boom - Navvy's Rose again.
Wherever ground suddenly becomes available in the northern hemisphere this flower appears and serves the useful purpose of consolidating the newly exposed soil, preventing further damage and providing a useful habitat until trees and bushes take over after about 5 years.
The shoots and stalks can be eaten and a tea made from the leaves is still a popular drink in Russia. Another Swedish name is "milk plant" (mjölkort) because it increased the milk yield of the traditional cows that spent their summers foraging in the forest on the summer farms.
And I just thought it was just a common weed!
In our part of the world it usually flowers towards the end of July, telling us that summer has passed its best and autumn is on the way but this summer of drought and sun seems to brought forward that flowering by 3 or 4 weeks.
Here it is growing where the forest was felled a few years back.