Would anyone like to share their experiences with Trier as seed or pollen parent?

At what stage do its seedlings typically start blooming? At the early seedling stage? sometime within the first year? or when it gets some girth?

I have a great respect for this rose. Despite a deep freeze in late spring in zone 5 last year which destroyed fruit set in fruit trees, and which caused cane damage to what I thought were hardy roses, this rose had no cane damage whatsoever.