D&D 5E - Experiences with Plant Growth?

So, my bard just got access to 3rd-level spells. One of my new spells will likely be a big action denial effect (hypnotic pattern or fear), but I was looking at options for the other one and happened to notice plant growth.

I did not realize how big a punch that spell packs in combat. It makes doubly-difficult terrain (one-quarter speed) in a 100-foot radius (!) at 3rd level. You can leave paths open for your allies. And it's permanent, no concentration!

So, my question: Has anyone used it in play as a combat spell? If so, how useful did you find it? What did you use it for? I can make up white room scenarios all day, but I'd like to hear real play experience if anyone has it.

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