I am posting an image of Andreas Maschke (B3) flowering in my garden. Very nice plant, herbaceous in appearance, very similar to its pollen parent. The flowers have pollen and carpels.
I have used its pollen on so called fertile itohs to increase the tree peony characters and obtain fertile backcrosses. I tried it also on herbaceous hybrids like Blushing Princess and Old Faithful and got a few seeds last year. I have pollinated B3 with other similar peonies like B2 and B1 but results are still to come. I have a couple of seedlings from Andreas Maschke open pollinated still very small.
This plant and its siblings are very promising for breeding3 CommentsI have tried B3 pollen on several itohs such as Watermelon Wine, Belle Tolousaine, Sonoma Rosy Future, Gordon Simonsen but no seeds yet. This year I have tried also the same pollen on Golden Experience. Results if any will be visible in a couple of months. I do not want to cross these RIBC2 with herbaceous hybrids because it increases the herbaceous chromosome set and appearance.
@roberto I forgot to answer your question about my results hybridizing with this, sorry. Now that I see this post again I suddenly remember…
Growing seedlings currently from these crosses with B3 (Andreas Maschke):
(Big Jhonny x open) double pink x B3: 9 seedlings
(Old Faithful x Grand Massive)001 x B3: 2 small ones
(Pink Vanguard x Buoy Master)005 x B3: 4 seedlings
Old Faithful x B3: 12 seedlings, some growing very well
B3 x (Pink Vanguard x Buoy Master)003: 2 seedlings
(Strong Coral x Grand Massive) 001 ‘Invictus’ x B3: 2 seedlingsI haven’t tried it on tree peonies as you have.


@roberto Have you obtained any seedlings from the cross Itohs x B3?