How do you watch a particular folder with gulp watch?

I'm using gulp watch to compile my scss files, but I have a ton of sass files in different folders. Every time I make an edit, it compiles everything in my project. I just want to watch a specific folder. I tried using the gulp-watch usage example on github and from all sorts tutorials online.

How do I compile only files that change or watch a specific folder?

I'm running Laravel 5.3, too.