By Bultac0
United Kingdom 
What is the name of this invasive plant. It is about one metre tall, sturdy and either pink or white. I live in chalky Hampshire. See photos.
Regards, ian
12 Jun, 2020
Answers
Common name valerian...
12 Jun, 2020
and no matter what I try I cant get it to grow in my garden. contrary thing.
13 Jun, 2020
It grows all along the banking on the M4 motorway.
13 Jun, 2020
Centranthus. It comes in white, pink and red. Good for moths. Easy to pull out, usually re-seeds.
12 Jun, 2020