Yes. Blueberries freeze exceptionally well for 10-12 months and can go straight from the freezer into most recipes.
Blueberries have a short season and a short shelf life at room temperature, which is exactly why so many people stock up and freeze them the moment they're on sale.
They handle freezing better than most fruit because their skins are sturdy enough to survive without collapsing — a few minutes of prep now saves a mushy, clumped bag later.
Freeze blueberries in a single layer first if you want loose berries that are easy to scoop later. Drying them well also helps.
Blueberries usually keep very good quality for months in the freezer when sealed tightly.
Blueberries soften a little after thawing but still work very well in muffins, smoothies, oatmeal, sauces, and desserts.
Blueberries are among the easiest fruits to freeze well. Flash-freeze them loose first, and you'll have ready-to-use berries for nearly a year.
It keeps the berries separate instead of freezing into one solid clump, so you can pour out exactly the amount you need later.
Not much — they hold their flavor better than many fruits, though the skins can get slightly tougher and the flesh softer after thawing.
Yes, most recipes call for adding them frozen so they don't bleed color or turn the batter mushy before baking.
Washing is fine as long as they're dried thoroughly afterward — extra moisture just turns into extra ice and a wetter, mushier thaw.