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'Tantau's Bernsteinrose' Reviews & Comments
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Parentage:
"Origin
This variety arose from controlled pollination of two unnamed seedlings. " :(
Source: http://pericles.ipaustralia.gov.au/pbr_db/docs/1992028.doc
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It´s the same as parentage unknow.
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It's not the same... the hybridiser would likely have a record of what the lineage of the un-named seedling was and it was the result of a planned cross. This might have been done to protect intellectual property rights or to disguise the lineage for marketting purposes.. for example it might detrimentally affect the sales of a rose in Australia if one was to advertise the fact that 'Rhapsody in Blue' was a parent of one of the seedlings as RiB in general does quite poorly here.
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Rhapsody in Blue seems to be position-dependent - it does fine in my slightly acid clay soil, Mediterranean climate, zone 9b. On its own roots.
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'Rhapsody in Blue' is own-root and on acid soil here as well; deep red soil. It's in a prime location. Every summer, without fail, it goes dormant and loses all its leaves only to make a new batch in autumn. It grows ok, if you can ignore this trait but its not really something I think Aussie gardeners are after as we spend a large proportion of our time outdoors in our gardens in summer. It's a nice colour, but I think it is completely unsuitable for Australian conditions. It's descendant, 'Wild Rover', is exactly the same down here.
P.S. did you get my email, Margaret, thanking you for the HRiA journals?
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Yes, I did thanks - a bit hectic at present, hence the delayed reply!
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Rhapsody in Blue seems to be very temperature dependent, actually. I think it's the temperature above about 80 degrees Fahrenheit (27 degrees in Celsius) that induces a type of dormancy in that rose. I grew it in a marine fog bank in coastal SoCal and it did just great there all summer long at average temps of about 75, but moving it out of the fog bank and to areas just a few degrees warmer induced that summer dormancy thing it does, all in very similar soil types.
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It doesn't defoliate at all in my no-spray garden. Mediterranean climate, hot dry summers, occasionally above 100F / 38C. Not flowering at present (late summer) but I haven't deadheaded it. I would regard it as a robust rose, and am surprised to hear that others have problems with it.
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Stormy Weather loves heat, and you can prune it to stay as a shrub. I mean, if you like RiB but hate that it cries as soon as the sun comes out.
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Often times "seedling" is a known variety, or a simple cross of 2 known varieties. It's uncommon for a "seedling" to be a complex hybrid.
On rare occasion, unknown is known, but masked for protective reasons. But often is truly unknown. It's a real pain.
In quite rare cases, the seedling is not only known, but given or sold to a breeder by another breeder, and it is either masked or stated as their own unique lineage. This is more common from country to country, rather than within any given country.
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