Originally posted by hazelrah:

i pretty much do the exact same but in reverse. i mark blueberries with dot and a 'b' (also mark mushrooms w/ a dot and an 'm')... then hunt the thistle. harder to see the berries and mushrooms while the thistle stands out.
ultimately markers are your friend. you can chart a path connecting the dots on your next foraging trip and save a lot of time, however you choose to do it.

I marked berries early in game, but as I played more and more, Thistle and blood bags became the two items I was most frequently out of, while my supplies of Blueberries and raspberries never run out. I have a full iron chest of both at the moment.

I'm speaking from a "pre-hearth and home" perspective as I've not played very much at all since that update.