Recent Introductions – Suggestions and Recommendations

I lost my entire rose collection and private germplasm during the 2020–2021 COVID and Texas freeze years and am finally getting back into hybridizing. I won’t be chasing R. bracteata, but I do expect to emphasize climbers. My goal is to produce roses that will thrive in Zone 9a (College Station) and exhibit disease resistance, fragrance, and season-long bloom production, in that order.
My hunch is that the “Knock Out effect” has led to a much stronger emphasis on disease resistance in newer introductions. I’d love to hear recommendations for proven fertile breeders released in the last 15 or so years that I should consider acquiring. They don’t have to be climbers—any rose that is a good seed or pollen parent and transmits good health with decent fragrance and rebloom is of interest.

Thanks,

RBx

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It won’t be until next year mine will be big enough to work with in earnest, but I picked Winner’s Circle for pretty much all the reasons you’ve listed, aside from fragrance. It’s a Knock Out adjacent triploid climber that is evidently quite fertile. What little pollen I’ve used from it has set some large hips. Most importantly for me, it is capable of creating healthy species hybrids, as seen with Tom Silvers’ palustris x WC clone.

It’s not a climber, but Sweet Spirit has a lot of potential for health, fragrance, and rebloom. It’s a hybrid tea/knock out cross that managed to inherit the best of both its parents. I am growing three selfed seedlings from it that are all extremely healthy and fragrant. The strongest one is constantly pushing out blooms and new growth, even in the dead heat of summer. It got some mildew this spring, but I have yet to see a single leaf develop blackspot. The bloom itself is rather plain, especially compared to Sweet Spirit itself, but I think it’ll make for a good stepping stone.

Neither of them check all of your boxes, but we’re in similar climates so I figured I’d mention them.

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Thanks for the info! We’re definitely on the same page.
A fragrant and fertile Radler - IS A MUST HAVE.

My Sweet Spirit arrived from Heirloom yesterday, and I’ll check out Winner’s Circle.

Aloha × Sweet Spirit, Aloha × Carefree Beauty, Sweet Spirit x Carefree Beauty are at the top of my list, with reciprocal crosses for each.

I’ve also got high hopes for Crown Princess Margareta. The amount of big, healthy foliage it has pushed in just one week has been impressive. Aloha × CPM is another cross I’m excited about—a modern Kordes offspring of Abraham Darby / grand offspring of Aloha bred back to Aloha. In a best-case scenario, it might produce a sort of “Super Abraham Darby,” but even if it doesn’t, I’d be surprised if it didn’t generate a few seedlings worth carrying forward as breeders.

Sidebar: Not long ago, I would have tackled a friend before letting them mail-order roses for delivery down here in June, but I’m amazed at how well last week’s shipment from Heirloom is doing. It really is a new world. That’s CPM foliage top middle right of first photo. Sweet Spirit is lower-middle in the second.

RBx

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I would recommend ‘America’ as a vigorous climber that produces lots of seeds with whatever pollen you throw at her. She produces a lot of exogenous seeds, but all of those hips also have regular seeds inside.

She is my fastest-growing climber and constantly produces blooms. In terms of vigor and bloom habit, she is one of the best.

I’ve thought about America more than once, but considering it’s a hugely popular 50-year-old rose with only three introduced offspring, I’ve always figured its genetic potential had already been explored pretty thoroughly by hybridizers a lot better than me. Have you had any luck with it?

RBx

My America crosses did not germinate last year, but that’s most likely because I pollinated in mid-August and I didn’t give the hips enough time to ripen.

I’m still a freshman in rose hybridization. I’m learning every year with costly mistakes.

I’ve always figured its genetic potential had already been explored

To this, I would say that there are some wonderful roses that have come out in the past 20 years that most likely have NOT been crossed with America yet.

In hybridization, the current focus seems to be on disease resistance. Many of us want to avoid creating roses that cannot survive the most basic rose diseases without an extensive spraying regiment.

My biased expectation is that roses that are already half-a-century old might be getting skipped entirely during the selection process in an effort to focus on newer more-resistant varieties, under the assumption that older roses are automatically weaker or that they were bred without disease resistance in mind (for example, this appears to be a common discussion online with David Austin vs Kordes roses, where DA focused on an “english rose” appearance while Kordes focused on disease resistance and durability).

I think any rose variety that has at least 2 desirable traits AND readily produces hips should be included in any breeding program. If anything, just for stratification and germination practice.

America offers vigor, large blooms, and fragrance, AND she has Fragrant Cloud in her parentage, so regardless of breeding goals, some of her babies should be pretty interesting.

Of course, I’m not gonna force you to go out and buy the most expensive America you can find, but if you do come across her as an inexpensive bareroot locally, I think you should get her.

She definitely stands out from some of my other climbers. That salmon/coral color is breathtaking up close.

P.S. I never connected the dots that she was named “America” because she was introduced during the 200th anniversary of the US in 1976. Now that we are on the cusp of the 250th anniversary, she has turned 50 (as you pointed out).

Fascinating!

EDIT: I just realized that your original post was asking about disease-resistant roses from the past 15 years, so I don’t know if this response is still relevant. But I guess I would still say that an America X New-Rose has probably not been attempted yet.

Your results may differ from mine (as your disease pressure surely does), but for me, Sweet Spirit was actually a huge disappointment. It initially appeared to be worthy of the hype, and I hit it with all kinds of pollen during its first spring, with most resulting in hip set. However, after that promising first spring flush, its blackspot resistance dissolved before my very eyes, and it could hardly keep any leaves from that point onward. I regretted wasting so much pollen and time on it, and it eventually aborted many of the hips and had poor germination as well. At least that experience taught me to take a little more time getting to know brand new roses better before going too wild with crosses.

Stefan

Stephan,

Thanks, I was afraid it could be too good to be true that a fragrant, fertile, truly disease resistant KO offspring was released. It’s got to have some of those genes in there. Think I’ll try Sweet Spirit back to Carefree Beauty and see if I can get lucky.

RBx

Oops. Just realized I made a mistake above due to a mistake on my spreadsheet of the 30+ roses I’ve purchased. Crown Princess Margareta is an Austin NOT a Kordes. At least the comments on HMF are positive…

If disease resistance is a goal, I would not recommend America. She is fairly BS prone. (Actually, I would avoid 99% of the more popular high-centered roses from that era, when rosarians accepted spray regimens as a normal part of gardening. You will still find HMF members are absurdly charitable in rating the disease resistance of a great many HT roses.)

My healthiest roses include several from Kordes (post 2000 generally). Their German site gives pretty accurate assessments of the disease resistance. Unfortunately a good many of their Roses are relatively stingey with the blooms, especially in the first couple of years.

I doubt America would set many hips in the Texas heat.

Winner’s Circle isn’t fragrant, I don’t think. Just making sure my initial wording wasn’t unclear. They did recently come out with the first fragrant knock out though, Easy Bee-zy. It’s a very nice single yellow rose. Not as blackspot-resistant as the original, and it strongly favors single-petalled offspring, but it’s very fertile and floriferous. Kind of labor intensive since most hips only produce a few seeds.