Forum Rose Hybridizers Association

When I started hybridising I didn’t find the central eye pattern of hulthemias attractive, but after seeing “See you in pink” in person I decided that I needed to get on the blotch train. Bravo Babylon Eyes caught my attention: I can’t find anything on the site or HMF. Outside of ZA I can see that it is available in Europe at least and that it comes from a Dutch rose breeder. It would be interesting to hear if anyone has any experience working with it. 1 post - 1 participant Read full topic

Another new hybridizer question for all the veterans out there. I’m heading into my first harvest and while I’ve read up a lot on when to harvest the hips I’d be interested to hear yours. Particularly I want to make sure I don’t harvest too early. However I don’t really know how long all my roses, except for one, really take before I know they have mature achenes. Here is my understanding of the criteria: #1 Full color (which ever color that is) and a little bit soft #2 at least 120 days unless at #1 #3 about to fall off or be ruined due to: stem about to rot, predicted frost, deer buffet etc… I ask as except for my one species rose, R. blanda, everything else is still very green and past 90 days closing in on 120. I’m in z7a with an average first frost around 11/11. No deer pressure, maybe a little squirrel pressure. NYC squirrels are Jr. racoons. My current plan is to just let everything keep going until hips hit #1 or #3 , probably a freeze. Plenty of my R. blanda are nice and red but still very firm so I’m watching those closely. I have harvested a few so far. I’d be interested to hear anyone else’s process. Thanks in advance. Peter 14 posts - 8 participants Read full topic

At about the end of June I scarred about 200-300 open pollinated HT achenes in a mixture of 3% hydrogen peroxide in a 1/3 cup of water (soapless mixture A of Don’s guide) for about 12 hours and I sowed them outdoors in seed trays. The temperature did fluctuate between an average of minimums of 3-7C (there were few days that reached 0-3C) and daily highs of 15-21C. About 70 days later I now have 30 seedlings and more are still coming up. I’m quite happy with the results, the germination rate is currently somewhere between 10-15%. If I get any more hips which are open pollinated I’ll test them in summer conditions.

At about the end of June I scarred about 200-300 open pollinated HT achenes in a mixture of 3% hydrogen peroxide in a 1/3 cup of water (soapless mixture A of Don’s guide) for about 12 hours and I sowed them outdoors in seed trays. The temperature did fluctuate between an average of minimums of 3-7C (there were few days that reached 0-3C) and daily highs of 15-21C. About 70 days later I now have 30 seedlings and more are still coming up. I’m quite happy with the results, the germination rate is currently somewhere between 10-15%. If I get any more hips which are open pollinated I’ll test them in summer conditions. 7 posts - 5 participants Read full topic

Love that cross as well! I checked but none of them are available here to my knowledge, odd that I can’t find Nymphenburg as LR works close with Kordes and the majority of their catalogue comes from them. Very jealous about Trier, the white and yellow roses are my favourite.

Regardless of the extents, it is not an RMV pattern that is depicted in that photo.

Hmm, reminds me of one of Barney Gardner’s seedlings, Fallen Snow, we referred to that as “R. Kudzuii” as it began growing and never stopped.

Here she is, super leggy and loving to spread horizontally. Been spotless all season though. Maybe seeing some signs of mildew as the weather cools down, which is kind of a bummer .

Thank you! I’m hoping it adds more petals and form next year. (AND that its siblings bloom!) Pink is my least-favourite colour, but pale blush, or scorchingly-hot pinks can be acceptable. Is ‘Prairie Princess’ available where you’re at? It is found behind many useful & fertile breeders in N. America. Another modern tetraploid, Kordes’ ‘Nymphenburg’ has proven useful to me as a pollen parent, but I’ve had no luck growing its seeds. ‘Trier’ and ‘Mutabilis’ are both diploid, but yield pink flowers readily, and doubles. Here’s an OP seedling of ‘Mutabilis’ that germinated in 2024 for me, and I’m utterly charmed by: