Can anyone tell me what this is? Tall, red flowers which are just budding. From googling I wondered if it might be Lobelia Cardinalis but I'm not sure. It's also a spreader, and is growing up the sides of the path so I'd like tips on how to reduce it if possible! Digging it out doesn't seem possible because of it being right under the path.
If anyone wants to tell me the name of the shrub it's growing through as well, that would be super helpful!