In a large saucepan, combine carrots, pears, pineapple with juice, lemon juice, and spices. Bring to a boil over high heat, stirring frequently. Reduce heat, cover and boil gently for 20 minutes, stirring occasionally. Remove from heat and stir in pectin until dissolved. Bring back to a full boil, add sugar all at once, bring back to another boil and boil hard for 1 minute.

Remove from heat, skim off foam. Ladle into prepared jars with 1/4 inch headspace. Process jars in a water bath for 10 minutes. Makes 6 half pints.