Does anyone know what this plant is?

[Thegirlwithnousername]

I have a mystery plant come up in my garden.
I don't remember planting anything like it..So maybe it's weed?
I am a total novice at gardening so would really appreciate some help!

Thank you!

Buddleia?

I'd say buddlia too

Heres a few more upclose photos.
Sorry taking a bit longer to upload.

Everyone is right. It is a weed. Called Buddleja.

Sorry site is playing up should be 3 photos.

It doesn't look like buddleia to me, not sure from that photo what it is though

Oh the photos took so long to add the extra ones.
Thank you for the swift responses!

It looks like a steeple bush

I don't think its buddleia either - the flowers are too open & flouncy. Spiked Speedwell?

Looks like a version of a spyreia to me

I ran it through Plantnet and it came up as Steeplebush

Not Buddleia, it is Spirae, probably the cultivar Douglasii

I thought spirea.

It isn't buddliea it's spiraea

The leaves in the first pic look like buddleia to me but not the flowers. Even if it is a ‘weed’ which I could argue it is not, it is wonderful for bees and butterflies

Looks like this to me... en.m.wikipedia.org/wiki/Spiraea_douglasii

This is handy for identifying plants candide.com/GB I saw what I thoutht were some poppies across the road from me a couple of weeks ago and took DH's phone with the app on to take a photo. They were indeed poppies.

I agree even if it's a weed it looks lovely so I am going to keep it!
Hopefully it will attract lots of bees and butterflies.

I read once that a weed is just a plant in the wrong place - so if you love it and want it then it's no longer a weed 😬

Oh I love that! It's very true - Some weeds can be lovely!

I had no idea you could use apps/websites to identify plants! - That's amazing!
I have checked two sites and they have both said Spiraea Douglasii or Rose Spirea is the other name it's known by.
Thanks everyone for the help!

I had thought spirea too.