Canning method
Soak the dried apricots overnight in enough water to cover.
Combine the rhubarb, orange, and lemon. Measure the fruit mixture and add an equal amount of sugar, about 6 cups.
Cook until thick, about 30 minutes or until the mixture reaches 220°F, stirring frequently to prevent sticking. Add the chopped nuts.
Pour boiling hot conserve into hot jars, leaving 1/4-inch headspace. Adjust lids.
Processing: Process half-pint jars for 15 minutes in a boiling-water canner. Yield: about 7 half-pints.