I made the mistake of thinking small bits of yarn could be composted. I'm talking about 6 inches or less of string, basically. (It never did, so now I leave it outside for the birds to use for nests.)
Because I used to hike, and my husband hiked a lot, I got to know more about different fibers used in blankets and clothing. Cotton is a terrible fabric for blankets because it's not warm and if it gets wet, it takes ages to dry. That's why hikers use wool and synthetic blends that wick well. And generally speaking, you won't find any high cotton content blankets unless it is a pieced quilt. Your average blanket is going to be synthetic blend, and will be in the landfill until after many of us are gone. And I don't know anybody but me who actually owns real wool blankets, and I haven't ever seen one on the shelf at a store during my adult life. The ones I have were probably from the 60s, when people were practical enough to buy something warm but itchy. Nowadays, nobody buys a wool blanket.
So this blanket could have conceivably been sitting outside for 20 or 30 years and still be in tact.
Apologies for the long post about fibers, but it hits on my hobby interests.
Sent from my SM-G920V using Tapatalk