R. davidii

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jbergeson
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R. davidii

Post: # 67604Post jbergeson
Sat Apr 14, 2018 10:15 am

I planted out a R. davidii last year (maybe the year before, and moved it last year).

I put on my boots and trudged through the snow out into the field yesterday to look at roses.

R. davidii seems like it has green wood nearly to the tips. It is only about two feet tall or a little more and has many fine stems.

I am in Zone 3b, but it might have been a Zone 4 winter.

Anyways, this makes me optimistic that R. davidii is another tetraploid species that might be worth integrating for those of us in cold climates.

philip_la
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Re: R. davidii

Post: # 67617Post philip_la
Sun Apr 15, 2018 11:50 pm

This is one that has intrigued me, though I haven't been able to justify the realty to plant very many species in my little yard. R. davidii figures into pedigrees of some rather healthy plants, including Baby Love and Pretty Lady. (Baby Love, admittedly, has fallen off its pedestal somewhat in recent years apparently, and PL is a (ho-hum) pink, so I dunno if that's much of a commendation...) Curious to know if others have experiences with this species... Hardiness is something I was not aware of with it...
Philip F.
[size=small][color=#669966]Zone 8 / Sunset Zn 30 (Austin, TX -- formerly New Orleans, LA)[/color][/size]

david mears
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Location: Mudgee, NSW. Australia.
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Re: R. davidii

Post: # 67618Post david mears
Mon Apr 16, 2018 4:15 am

Hi Philip, if you go thru some of Warren Millingtons list of crosses he has incorporated it in last season(2017) here in Australia and maybe 2018 crosses I think you will find. Warren will correct me if I am wrong.
[color=#FFFF00]david mears
in Mudgee,
in NSW,
in Australia.[/color]

Warren
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Re: R. davidii

Post: # 67624Post Warren
Mon Apr 16, 2018 7:34 pm

thank you David

philip_la
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Re: R. davidii

Post: # 67634Post philip_la
Tue Apr 17, 2018 1:21 pm

Yes, thanks David and Warren. I have seen several attractive seedlings from Warren having davidii in them, and from the photos, they do look very nice. I should have been clearer in expressing an interest in the *specifics* of other's experiences, which is to say, whether folks feel that the species itself can be credited with contributing greatly to the health or overall demeanor of its offspring? Warren probably has the most extensive experience in using it along with a good number of healthy hybrids and species, and I was wondering how davidii stacks up against the other breeders for delivering good results.
Philip F.
[size=small][color=#669966]Zone 8 / Sunset Zn 30 (Austin, TX -- formerly New Orleans, LA)[/color][/size]

Warren
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Re: R. davidii

Post: # 67641Post Warren
Tue Apr 17, 2018 9:18 pm

Hi Phil,
R.davidii is very good, Those pics which you saw were from the (Wendy X Altissimo) X R.davidii, the vigour was exceptional growing 9 ft in one year from germination, Health is also very good. When I crossed R.davidii with Sympathie (Hybrid kordesii background) it didn#t do much growing until its 3rd year, it flowered for me in the 4th year.

philip_la
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Re: R. davidii

Post: # 67643Post philip_la
Wed Apr 18, 2018 12:01 am

Wow! THat's a scary vigorous seedling. I gather the vigor came in part from Altissimo? As I say, I know that both Pretty Lady and Baby Love were touted as being highly disease-resistant, and I noted R. davidii in the pedigree of both. I wondered if it was a primary contributor, or just coincidentally in the pedigree of two (reportedly) very healthy plants.

I should check to see how commonly R. d. has figured into the lineage of other roses through a HMF search.

Thanks. Those were attractive seedlings, as are so many of yours.
Philip F.
[size=small][color=#669966]Zone 8 / Sunset Zn 30 (Austin, TX -- formerly New Orleans, LA)[/color][/size]

Jwindha
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Location: SC - Zone 8a
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Re: R. davidii

Post: # 67651Post Jwindha
Wed Apr 18, 2018 11:39 am

Tom has done some work with davidii as well

http://maprc.blogspot.com/2012/05/rosa-davidii.html

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