Blend the peaches and berries together in a blender, you may have to do 2 loads in the blender.

Pour mixture into a large pot along with lemon juice, sugar and sprinkle the pectin over the top.

Bring mixture to a boil, stirring frequently.

Once at a boil, reduce to a simmer and simmer mixture for ~10 minutes or until mixture can heavily coat the back of a spoon. The mixture may begin popping, gently place a lid over the pot at that point and remove from heat, it will be done.

Place jam into cleaned and dried jam jars or freezer containers. Process jam for 15 minutes in a hot water bath canner, let sit for 24 hours before checking for a seal by pressing on the center of the lid and if it is down it is sealed, if not, reprocess jam. Store on the shelf for ~1 year.

To freeze, place into freezer containers and freeze for around 1 year.

unprocessed/unfrozen jam will last in the refrigerator for ~3 months.