to weed or not to weed

to weed or not to weed

I came across a grass that looks nice but spreads like crazy, so i do think it is a weed. It's not my garden so I need to know if to weed it or not. I never saw it before in my country.

Can anyone help me? Name it if possible?







Then I also have a question about heathers.

I think they are both Erica and Calluna, but mostly Calluna, blooming now in spring, UK.
When they finish with blooming I will prune them, but they are quite bushy, not well kept from the years before and have more wood then leaves. Is it possible to do a more radical prunning? Will they manage? or should I do it in two years?
I saw a vid about prunning heathers saying you should just cut them under the blooming part, but if I do that here, they'll look hideous.

I am not very familiar with heathers from my experience so I am not sure, maybe they are suppposed to look that way.

Thank you very much. I'll bother you even more in near future XDD.







Mystery Flower?

Mystery Flower?

Flower pickings for today

Flower pickings for today

Curious

Curious

Moy Grande Hibiscus

Moy Grande Hibiscus

Mystery flowering shrubbery…ID help requested…

Mystery flowering shrubbery…ID help requested…

Regarding variegation

Regarding variegation