Solved Pink spear flowered plant

I have had this pink spear flowered plant growing in my garden for the last ten years. It is very strong growing and resilient to drought. I want to know what it is. I lost the label shortly after I planted it. This is a photo of a sucker that grew out last year:
Imgur

 

If you click the blue link it will go to the photo.

Don't know what is happening with images on here. I used the image button and it just appears with a cross through it so edited the post to include a link ...

 

No. The stems have leaves all the way up right to the flower.

 

Thanks. The flower had gone over a bit by the time I took the photo. They are at their height in June and early July. But you get the idea ...

 

About a metre and a bit high. The photo is of a sucker. The plant starts from a small clump of stems like this and gets bigger and bigger as the years go on. The ten year old one is about 40cm across. I took a photo but it didn't come out well.

 

It's a long shot, but what about pink Buddleia? The leaves look just a bit too alternate, though.

 

Hang on a minute.
It has been marked solved!
The leaves of Buddleja davidii are opposite on a stem

buddleja davidii leaves - Google Search

buddleja flowers - Google Search:

This is not Buddleja but Spiraea douglasii......leaves alternate...a suckering invasive shrub.

Quote..."This is a photo of a sucker that grew out last year:"
"The photo is of a sucker"


spiraea douglasii - Google Search

spiraea douglasii flowers - Google Search:

 

Yes definitely a Spiraea Douglasii. I grow it. Not a favourite but useful for late flowering. Best if pruned hard in spring as flowers on new wood.

 

Yes, it is Spiraea douglasi. Whoever wrote it down as "invasive" is being rather harsh. Mine has been sitting there nicely for ten years just the clump getting bigger. It was only last year it made its first sucker.