Maybe some kind of moisture? I had a sealed bag of grass seed and when I opened it, grass was already growing in the bag. Never seen that before either. Maybe contact them to see if they can explain the why or how?
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD