Garden weed indentification

[Kkma5159]

Hello all,

We moved into our new flat last November which had a new lawn laid. This month, some weeds have sprung up in the grass and are covering alot of it. Google hasn't really identified it and worried it might be Japanese Knotweed. Google pics don't look exactly the same. Does anyone have any idea what this could be, fairly worried about this!

It looks like wasabi, but I'm 99% it isn't! I'm afraid I don't know, but a hopeful bump for you. If no luck on MN, ask the question on the gardeners world forum. Free to join too.

It's garlic mustard. Spreads like mad. Not wild garlic.

bindweed?

https://www.thespruce.com/controlling-and-preventing-bindweed-2540090

Plant Identifiers says it's Pyrenees Butterbur- sounds like something from Harry Potter

That looks absolutely nothing like Japanese knotweed so no worries there, and definitely not bindweed. Not sure it has the serrated edge of garlic mustard though?
You might have to wait till it flowers to identify it but I doubt it's a major problem like JK, probably just a highly annoying one! We have ground elder and that is a similar menace.

Looks like butterbur to me it's quite common round where I live, as is Japanese knotweed and it's definitely not that so don't panic!

I agree its nothing like japanese knotweed which has very upright stalks which grow much higher and red stems.

It's not the normal native butterbur, the rather weird, flower spikes of that erupt before the leaves. They're unmistakable I think.

sounds like something from Harry Potter

It does, doesn't it? The name is because the leaves, which get large, were used to wrap butter in.

I'd never come across the Pyrenees butterbur before, aka winter heliotrope - that does look like a match.

www.rhs.org.uk/weeds/butterbur-and-winter-heliotrope

I think we have knotweed, its growing through the concrete and has stems almost like bamboo... it grows like a huge bush and gets pink/purple flowers on it at some points in the year (looks oddly pretty but tore through out kitchen waste pipe).

Looks like butterbur to me too. It has pretty flowers but it spreads and it's difficult to eradicate without weedkiller

I think it might be a violet, my white ones are just starting to flower but the blue ones will be a bit later

Thanks everyone for your help, such a relief! We have a flower which seems to help identify it as winter heliotrope. Any experience with dealing with this?