Its just a lower chance if its not near flowers

This is the main character in a line of NPC houses

Sleeping usually makes it stop raining too.

Or Julian date!

Haha sounds to me like you are just using a healthy risk/reward system! I usually try to only grab stuff from my yard or far enough away from the road or stream that it wouldn’t have gotten gross (urban area) but I definitely snacked on some ripe mulberries, wineberries, and black raspberries that were right along the road within the past few months.

This is a pretty good article on it