In such action the county attorney or county counselor may join as many parties as defendants as there are parties interested in the real estate described in the petition, whether such defendants are jointly interested in the property described or not, and may unite in one action all persons having or claiming to have any interest in any of the real estate described; but the court in its decree shall ascertain and determine the amount of taxes, charges, penalties and interest to the date of the filing of the petition, chargeable to each particular tract, lot, or piece of real estate, and in the decree state the name or names of the particular defendant or defendants who has or who appears to have any interest in the tract, lot or piece of real estate upon which a lien is fixed by order of the court.