Cass… what are your summer and winter temperatures like (max. high and low)? My clinophylla seeds, from Viru’s plant pictured on HMF I believe, have just come up and I have been expecting faster growth than I have been seeing so far. Temperatures down here at the moment are sitting in the high 20s-low 30s (80-86F) and veryhumid at the moment (unusual for down here) and I was thinking this would be ideal growing conditions for it. Our summer highs very rarely get up into the 40s (what’s that… about the 104F mark???), sitting mostly in the high 20s (hmmm. low 80sF) and rarely down to below -7 (19ish F)… snows once or twice a year but it doesn’t touch down… moderate frosts… trying to work out where/how to plant this rose so it survives the winter.
Robert, I’m not sure I got any strikes from R. lyellii, but I got a plant of R. tonquinensis that’s busting a move.
Simon, R. clinophylla wants to be in the ground. If you grow it in a pot, it may take a while to break out. Once I put it in the ground, it shot up a bunch of new basals all in the same year.
Our annual lows are between 18 to 27 ℉/-7 to -2℃. I have no snow and get all the rainfall during the winter months. During the growing season, I have an annual 6 month drought. Our annual highs are around 101℉/38℃. But we have coastal influence during the summer, so our nights are often cool and foggy. Sounds like my conditions are somewhat similar to yours in terms of temperature extremes, but I have lower humidities. Relative humidity is pretty useless because fog registers as close to 100%: it only occurs during cool nights. We don’t get hot and humid.
Cass, it’s too bad you didn’t get lyellii to strike. I had a hard time getting that one to root. It’s probably a timing issue. It might need mist. I finally layered it.
Now it’s poised to eat my back yard.
Tunquinensis DOES “bust a move”. I think you said yours mildews? Mine is clean so far about six feet tall.
I’m hoping for blossoms this Spring. I see lots of new growth but no buds as yet.
Hard to believe those seedlings germinated nearly one year ago on Valentine’s Day.
Thanks Cass… sounds like we have very similar climates indeed… clinophylla should do ok here then I think… might get ‘stung’, as you said, in winter but will be mostly ok 
I have just the spot for it where it can grow to it’s heart’s content. Does it sucker or is it more like bracteata in habit? Our rain is also all during the winter with pretty much none until the end of autumn (and then we get 900-1000mm all in just a three months). We are coastal here too and also get the sea fogs rolling in periodically.
More seedlings up now too… a sudden cooler spell has arrived and now seedlings are popping up… still hot and humid… I hate it! Give me dry and hot or freezing cold any day…
“Then too we have to wonder what version Viru works with?”
At least one of Viru’s lines of bracteata comes from Dr Bayse and is actually a mix of lots of different things. He sent me a list of this mix with the seeds he sent me from it. It looks like this:
"Lineage of Seedling 88-390-- Basye’s Bracteata
88-390 = 80-358 x 82-1134
80-358 = 77-505 x 75-229
77-505 = 73-06 x R.virginiane alba thornless
73-06 = Cyt 127 x 65-131
Cyt 127 = tet. R.bracteata
65-131 = 60-486 open pollinated
60-486 = 56-116 open pollinated
56-116 = R.bracteata x R.foliolosa
75-229 = 71-322 o.p.
71-332 = R.viginiana alba x 62-322
62-322 = R. virginiana alba x Betty Morse
82-1134 = is Basye’s Blueberry = 65-626 x 74-193
65-626 = R.carolina alba x 58-58 TH
58-58 TH (TH=Thornless) is Bayse’s Commander Gillete = R. carolina x Hugh Dickson
74-193 = 65-626 x 62-322
62-322 = R. virginina alba x Betty Morse (floribunda)
The R.virginiana alba used is probably a hybrid between R.virginia and R.carolina"
These seeds have not come up yet and in hind-sight I wish I had of subjected them to at least some stratification given they have a lot of more cold-hardy species in it. As it is they were sown immediately with little pretreatment… hoping they will begin germinating once the weather starts cooling down a bit. Robert, he said he was going to send you some of these as well in the near future.
It’s going to be too warm to sow seed here soon. In fact other than just a few late harvested things that will go out for germination any day now, my germinations for 2009 are almost finished. I’ll have first blossoms in the next week or two.
Heaven knows I have enough to work with here already.
I’ve got my fingers crossed that Tom’s bracteata hybrid flowers for me this Spring. It seems not that far removed from something Basye’s would have attempted.
An amazing cross. I’ll wager it’s fairly hardy to cold as well.
Thanks again Tom.
Thomas Silvers’ cross is amazing, Robert.
R.Bracteata x (R.Rugosa x R.Palustris)
Simon, Clinophylla does not sucker in my garden.
Yes, Robert, those were from R. clinophylla cuttings that you brought - thanks! The foliage is so distinctive and its amazing how green it remains despite many roses completely dropping their leaves for the winter.
Jim Sproul
Thanks Robert and George. Robert, I sure hope that seedling blooms for you this Spring too. I think the original plant is still alive after the move to its new home but there’s no guarantee with things like this.
Almost all of the seedlings from that cross, Rosa bracteata x (rugosa x palustris), have been extremely vigorous and white-flowered. This particular seedling was the only one that had pink flowers. It also inherited the most “rugosa” like characteristics of the foliage and armament. The other seedlings varied in how much palustris or rugosa influence they happened to inherit. I finally lost bracteata itself after several repeated years of it being frozen back to the ground here in Maryland (zone 6/7). None of the seedlings from that cross has ever shown any dieback at all here, so they definitely are more tolerant of cold than bracteata.
Tom, I’ve already propagated your hybrid. I can replace yours should it be lost.
Thanks for sharing your work. I’m watching for flower buds daily now. It’s flushing nicely.
We have weather in the low 80’s.
Wow! That’s great news Robert. Thank you too for taking the initiative to safeguard this unique seedling.
I hope that the extra cold-hardiness it inherited from its rugosa X palustris father doesn’t compromise any willingness to bloom in warmer climates its bracteata mama might have contributed.
Our weather has been bouncing daily between the teens and 30’s for a couple of weeks now and we’ve had an unusually large amount of snow. So the mother plant is buried under two feet of snow right now.
Low 80’s – I can hardly imagine, right now! ;0)
I’m already no shirt and sandals. It’s the reason I live here.
On my Father’s side we are subject to Raynaud’s phenomenon as we age. Fortunately our symptoms are very mild.
Still, we don’t tolerate cold weather well. Another reason to hybridize roses for warm climates. 8^)
Its conclusive: 98% of my R, bracteata was killed by the December freeze. This week I cut out all of the dead wood and realized all that was left was a 4 foot sucker that came up from the soil a foot away from the original plant. Well, I guess it will recover, but won’t be used in breeding this year.
A related note: I finally got the first germination of R. bracteata X ‘Magic Wand’ today.
Bracteata x ‘Magic Wand’ sounds cool! Will be watching your blog for progress on this one. My crosses of bracteata onto ‘Many Happy Returns’, and ‘Comtesse de Labarthe’ have taken as well. Hoping to squeeze a late bracteata onto ‘M. Tillier’ in too. Hoping to get diploid hybrids from the last two.
It’s great to hear about all this progress with bracteata. I can’t wait to get my hands one some fertile diploid descendants.
Paul, your (0-47-19 x 0-47-19) x clinophylla) hybrid is setting buds. I hope I can get something out of it this season.
Robert,
I have confirmed that 92-06-02, the Clinophylla hybrid you spoke of, is at least partially seed fertile. This morning I have observed the first germinations of the cross using ‘Old Blush’ as the pollen parent.
Sounds good Paul. I’ll try to utilize it with some of my healthier dips. The few attempts using it for pollen last season were not fruitful.
Confirming also that ‘Monsieur Tillier’ x bracteata has also taken as has ‘Heidesommer’ x bracteata and 'Flower Carpet Amber x bracteata
Paul, this season 92-06-02 appears to have set hips with every pollen I’ve tried so far. Some are swelling quite nicely.
Very interesting Robert. I now have several very healthy and vigorous seedlings from three of the siblings from the 92-06 group (including 92-06-02) that are beginning to look quite unique and attractive, as regards foliage and growth. I think these could prove uniquely promising for breeding a new style of shrub. Good luck with your new crop!
Paul