I heard an interesting discussion of the use of the Advent wreath in the church on the always excellent Catholic Underground Podcast. Joshua LeBlanc had done the homework and referenced the Book of Blessing in this regard.
1512 If the Advent Wreath is to be used in church, it should be of sufficient size to be visible to the congregation. It may be suspended from the ceiling or placed on a stand. If it is placed in the presbyterium, it should not interfere with the celebration of the liturgy, nor should it obscure the altar, lectern, or chair.
1513 When the Advent Wreath is used in church, on the Second and succeeding Sundays of Advent the candles are lighted either before Mass begins or immediately before the opening prayer; no additional rites or prayers are used.
So interestingly the use of Advent Wreaths is optional and I would guess at the discretion of the pastor of the parish when placed in accordance to the norms mentioned.
The U.S.C.C.B document “Built of Living Stones” mentions:
§ 128 § Objects such as the Advent wreath, the Christmas crib, and other traditional seasonal appointments proportioned to the size of the space and to the other furnishings can enhance the prayer and understanding of the parish community.
I like Advent Wreaths myself, but have certainly seen them used in a church in a way that obscures the altar.
The Book of Blessing also has the rite for blessing Advent Wreaths in both a short form and longer form with the short form recommended for the home to be done by a parent. You can read the appropriate section here. I hadn’t realized there was a specific rite for the home which I find pretty cool.
