Not very good at plants. I'm trying to ascertain if this is our native species.
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As the name suggests it's not a native. This is the one often seen in large clumps growing by major roads. Our native species is from my experience, quite a scarce plant. I've only seen it in the uplands of the Yorkshire Dales.
Please see my Flickr photo's www.flickr.com/photos/129804972@N07/
Thank you all.
On first glance I thought the 3rd photo looked hairy, but a blow-up suggests that is wrong, so S. gigantea fits and is called early for good reason.
The leaves are hairy at the margins, visible at highest magnification, which still fits S. canadensis.
It is the stems that matter.
Lat/Lng: 52.7, -3.1
OS grid ref: SJ3012