Crush blueberries, combine crushed blueberries and classic pectin in a large saucepan. Bring to a boil; stirring frequently. Add sugar, stirring until dissolved. Stir in grated lime peel and lime juice. Return to a rolling boil. Boil hard 1 minute, stirring constantly. Remove from heat. Skim foam if necessary. Ladle hot jam into hot jars, leaving 1/4-inch head space. Adjust two-piece caps. Process 15 minutes in a boiling water canner.
Carefully remove jars from canner using jar tongs
Set jars on countertop, leave undisturbed for 24 hours