How to prevent Mountain Rose from blooming? Persistently cutting off the flower stalks is the most effective
Mountain Rose generally blooms after about five years of cultivation. If allowed to bloom, the flowers it produces are not particularly beautiful, and after blooming the mother plant of Mountain Rose will die, though the offsets below the mother plant will continue to live. If you have a need for hybridization within the genus, you can let Mountain Rose bloom and then pollinate. But if you have no such need, you can choose to cut off the flower stalks to stop Mountain Rose from blooming, so as to avoid the death of Mountain Rose.

(PS: The reference age for Mountain Rose blooming is about five years. If you want to pollinate, in theory cross-pollination between different plants is required. After blooming, the mother plant will wither and die, but the offsets will not die.)
How to keep Mountain Rose from blooming
1. Since you have decided to cut the flower stalks, do not be soft-hearted; cut as aggressively as possible. The lower you cut, the greater the chance of normal offsets emerging. Cutting off only a little bit at the top has little effect;
2. After cutting off the flower stalks, if the root system is well developed and care is proper, new offsets will generally sprout within about one to two weeks (during the growing season), usually at least 3-5 of them. Congratulations, the first step has been achieved;
3. Are the 3-5 offsets that emerge after beheading normal offsets? If they are normal, then the plant has extinguished its desire to bloom and achieved our goal, and it will not bloom, or at least does not want to bloom for the time being!
Generally speaking, after cutting off the main flower stalk, the chance that the offsets that emerge are secondary flower stalks is about 80%-100%! (as shown in the picture below)
This one is very representative; many readers may remember it deeply, and even its final blooming appearance looks very much like a peacock spreading its tail.
I tried continuing to cut the secondary flower stalks, and then tertiary flower stalks emerged! Continue cutting the tertiary flower stalks! And then quaternary flower stalks emerged! To the point that gardening friends complained wildly, "This is not cutting flower stalks, this is purely a rhythm of seeking death with all one's heart!" After about the fourth or fifth cutting, 1-2 normal buds finally emerged!
Therefore, the most effective way to stop Mountain Rose from blooming is to cut off the flower stalks, and to keep persistently cutting off the flower stalks!