Seedling 105-04-08 is a cross of 'Sequoia Ruby' X "Magseed", the latter being a Ralph Moore rose I have mentioned before.
'Sequoia Ruby' is both a ridiculously easy and troublesome rose to breed with. It makes immense amounts of seed with almost any other parent, the seeds germinate at near 100% and a wide range of colors often result, including the occasional dove grey! However, this is often where the advantages end; 'Sequoia Ruby' has a lot of gravity and it takes a lot of work to escape that gravity. What do I mean by "gravity"? Well, it has the inclination to breed mostly miniatures that look a lot like itself, but in different colors. Most seedlings are upright growers to between 15" and 36", blooming with clusters of loosely HT style blooms that open to double cups of 40 or more petals. The foliage almost always looks the same as well: miniature and semi-matte, in medium green. However....
Occasionally you get lucky. Case in point is this cross. Apparently "Magseed" has a lot of gravity of its own, because I got a number of seedlings that were clearly Rugosa influenced shrubs that grew quite tall and had 3.5" - 4.5" blooms. 105-04-08 is what I consider to be the best of the lot and it just gets better every year. It is fully fertile in both directions (I am using it in breeding extensively this year) and is easy to propagate from cuttings. It has also grown out in the test bed for four years now and is one of very few roses that is almost 100% resistant to Blackspot. Sounds good so far. Criticisms? Well, It is a bit upright and lacking branching as much as I'd like to see, so it takes a while to fill out as a shrub. (Based on the single original plant in the test garden. The large one in a pot in the breeding greenhouse is a lot fuller and shapely for some reason) It isn't quite as generous with bloom as I'd like it to be, but I hope to correct that in a next generation. Neither does it have much scent, but the color....WOW! No photograph shows how rich and velvety the petals really are. Its a magnificent color, starting out a deep garnet red and aging with violet-purple overlay on the outer petals. I expect to cross it back to some of the "purebred" Rugosas to see if the shrub habit can be improved, and maybe cross it with some Hybrid Musks to increase the volume of bloom. 'Trier' is capable of some serious magic so maybe I'll try that.