We ask for the intercession of saints…
Hi Matthew

Welcome to Catholic Answers Forum!
Just to expand a little bit on what “Eucharisted” said… We ask the saints in Heaven, to “intercede” for us. That is… to pray for us and for our needs. But the prayer (and adoration), itself… is always for God.

This is also true, when we ask Our Blessed Mother for her intercession. We ask her to speak to God, on our behalf. We are simply asking them, to talk to God… about our needs.
One of the richest treasures of the Catholic Church is called “The Communion of Saints”. This refers to those who have lived and died, before us… having led holy lives, and therefore… officially Canonized (declared a saint) by the Church.
I honestly couldn’t tell you how many thousands of saints there are. But you can imagine it’s a LOT… after 20 centuries! Starting with Our Lady and the original Apostles and Disciples of Our Lord Jesus.
There are some saints… who are named “Patron” or “Patroness” of a particular thing, or a particular place, or a particular cause. This is usually specified because of a link that the saint had to the subject.
For example… St. Therese of Lisieux, was named co-Patroness of France (along with St. Joan of Arc). Because she lived a life of exemplary holiness… as a Carmelite nun… in the city of Lisieux, France. However, she is also the Patroness of Missionary’s! Because during her lifetime… she had a deep prayer devotion for the Missions. She prayed a LOT for Missionary priests.
Then there is St. Francis of Assisi. You’ve probably heard of him.

He is called the “Patron of God’s Creatures” because he had a great love of all of God’s animals and nature.
And St. Peregrine. He is the Patron saint of cancer patients… because during his life, he suffered (and I believe was cured of) cancer.
As for Our Blessed Mother, Mary… speak to her whenever you want! She is our Mother, too. Jesus gave her to us… as He was dying on the Cross. I would just suggest talking to Our Lady as a Mother. Just as Jesus entered the world through Mary… we, can enter Heaven through Mary. That means… with the help of her intercession. I tell her ALL my problems… several times a day!
And on and on. The Communion of Saints! These beautiful souls in Heaven, are truly our brothers and sisters… all of them, praying for us and wanting us to be home in Heaven with them, one day.
Hope this helps. God bless.