TL;DR: it's a known bug that i forgot about.

I'm on the PC version of Stardew Valley, and 3 days into blackberry season. The first day spawned a lot of loose blackberries, but none on the actual bushes. I thought it was weird, but in my experience, you seem to always find at least a handful of bushes on the first day, then more bushes begin producing them as the days pass during the season.

I figured since on the first day, it was a lightning storm, so maybe that had something to do with it. I played through the second day of blackberry season, and still no bushes, or even loose blackberries. I saved the game and moved into the 3rd day o blackberry season, and played for a couple minutes, doing a sweep of my farm for berry bushes, As I know for a fact that they will spawn on the Forest Farm, which is the layout I'm on.

Has anyone else had the same issue? It's irritating since blackberry cobblers are basically my Skull Cavern food supply, and I go out of my way to make sure I sweep the entire map for them.

I do have some mods installed, namely CJB Cheats, CJB Item spawner, Fantasy Crops, Prismatic tools, Show Item Sell Price, and Npc map locations. As far as I know, none of these mods effect bushes or berries in any way, and Salmonberry season came an passed, an I had no issues during salmonberry season collecting Salmonberries.

Perhaps it's just my bad luck, but I'd feel less irritated if I wasn't the only one to run into this problem, or if there was a way to reverse 3 days and try collecting again.