Just wondering, has anyone used Sarah Van Fleet in a breeding programme, I gathered it does’nt set hips , but the pollen may be viable.
My plant had rust. I didn’t consider it for breeding because I felt that it was too big a plant for the number of flowers it produced.
Hi Lydia
I was on a job the other day and noticed this huge rose, I mean really big 8 x 10ft, on closer inspection it was a rugosa, Sarah van Fleet. It was completely covered in blooms.
What gets me, people have used Rugosa to achieve various results, ( cold tolerance, mildew and BS resistance) but what seems to pop up all the time is the occurrence of rust, sometimes you have to wonder.
cheers warren
I think a lot of rust comes from the Cinn. types like acicularis, rugosa, etc. It seems to be a common pattern that I think culling can sometimes miss until it pops up a few years later on random whim.
Michael,
Reading this thread I was wondering, do we see rust in the rugosa species much or does it show up more in hybrids of rugosa?
Rob
Rust appears when you “break into” Rugosa genes; the species itself is disease free, in my experience. If you have ever grown ‘Rose a Parfum de l’Hay’, you will REALLY know what a rusty Hybrid Rugosa is about!
In the Canadian prairie states, all the native species get a lot of rust. This includes arkansana, woodsii/blanda, and acicularis. Likewise, hybrids that include these species (and probably other North American species such as nitida and palustris and virginiana and carolina) get rust. Breeders don’t worry much about it–it’s unsightly but it doesn’t seem to affect plant survival greatly because of when it develops. I don’t remember having seen rust on xanthina or laxa Retzius/Ross Rambler or villosa (presumably other caninas are also free of this rust) or close-to-species spinosissima/foetida hybrids. I don’t know whether the rust in that part of Canada (and the north central US) is the same as might be found in Scandinavia or Europe. Maybe roses native to regions which don’t have this rust are (still) immune to it–maybe because the rust has not yet adapted to the roses.
My neighbour has a very weedy, fertile elderberry that rusts profusely. I wonder if it’s the same variety affecting my roses. I’ve even seen a very little rust occasionaly on Carefree Beauty.
In far from good environment Rugosas are desease prone: rust and PM to the point of being quite ugly. Imagine this dense spination and thick leaved young shoots all mealy white with heavy PM.
In warmer, more humid, long season areas, NONE of the Hybrid Rugosas prior to Linda Campbell are worth spitting on. Rust is guaranteed and they can NOT be sprayed for it as they defoliate as soon as you apply it. Observing Austin’s work, that same addiction to rust follows the line bred from C.F. Meyer like hemophilia did in Europe’s royalty. Oh, just had a perverse thought…Playboy and any of them!
I know it was very late in the season, and where they are suitable, all the foliage would have already dropped, but I deliberately photographed these Hybrid Rugosa leaves at The Huntington at The Great Rosarians of the World event in January to illustrate what is usually to be expected late in the year (or even throughout the year in the case of Conrad Ferdinand Meyer) in my virtually no winter climate.
Kim
Link: www.facebook.com/album.php?aid=2078447&id=1222056152&saved
Thanks again Max.
“Is it consistently that cream color or does the coloring vary from blossom to blossom? I take it’s a once bloomer right?”
That rugosa X ‘Hazeldean’ seedling certainly seems to be a once-bloomer so far. It’s only had a few blooms at all because it hasn’t built up much size yet. I guess it’s possible that it could surprise me when it’s more mature by having some later blooms but I’m expecting that it’ll probably just stay a Spring only bloomer. The color of the few blooms so far has been fairly consistent - very pale. From a little distance, they could easily be mistaken for white. I’d like to see a little more color. Maybe I’ll get lucky and get some germinants in the years-old batch of seeds I finally got into dirt (of that same cross repeated).
Peter mentioned xanthina, laxa - Retzius/Ross Rambler, villosa (presumably other caninas) and/or close-to-species spinosissima/foetida hybrids as ones he hasn’t seen rust on. Amazingly enough, I don’t think I’ve ever seen rust here on anything, so I’m going to have to rely on what you guys have observed. Are these same species (and hybrids) still rust-free in other rust prone climates too?
Thanks, Tom
Jim, did you ever find anyone else who has Mr. Moore’s Yellow Thornless Rugosa? Have you had any results from your work with it since this last post?