Non Blooming Amber Cloud

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RBaxter
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Joined: Sun Oct 27, 2013 12:21 am
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Non Blooming Amber Cloud

Post: # 70088Post RBaxter
Fri Jul 12, 2019 5:00 pm

I'm on my fourth year with a couple of Amber Clouds and no blooms yet.

Figured it to bloom on old wood so I haven't pruned. They're just taking up a hell of a lot space and aching to be shovel pruned.

Has anyone on the Gulf Coast experienced similar difficulties? Any suggestions?

RBx
Katy TX Zone 9A

Karl K
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Re: Non Blooming Amber Cloud

Post: # 70099Post Karl K
Tue Jul 16, 2019 1:33 pm

Judging from the comments on HelpMeFind, 'Amber Cloud' is not a reliable rebloomer.
https://www.helpmefind.com/gardening/l. ... 464&tab=32

Karl K
Posts: 1250
Joined: Sat Jun 02, 2012 4:49 pm
Contact:

Re: Non Blooming Amber Cloud

Post: # 70102Post Karl K
Wed Jul 17, 2019 9:34 pm

I wonder whether climate is a factor. Years ago I enjoyed 'Belle Portugaise' (another R. gigantea hybrid) in Belmont, CA, flowering intermittently from October thru April. But in San Jose, not so far away, 'BP' did not repeat in any season, so far as i could learn.
http://bulbnrose.x10.mx/Roses/Rose_Pict ... gaise.html
Karl

RBaxter
Posts: 86
Joined: Sun Oct 27, 2013 12:21 am
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Re: Non Blooming Amber Cloud

Post: # 70104Post RBaxter
Thu Jul 18, 2019 11:26 pm

I can't get it to bloom at all much less repeat.

I think you are right about being climate related. Didn't Viru collect his R. gigantea at considerable altitude?
I'm in a low sauna, with basically a non-existent winter.

If I remember correctly the good folks at Roses Unlimited told me that its sibling Manipur Magic
did not bloom well for them either. They may have given up on Manipur Magic because of it.
I never managed to get one so I can't say for sure.

RBx
Katy TX Zone 9A

Karl K
Posts: 1250
Joined: Sat Jun 02, 2012 4:49 pm
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Re: Non Blooming Amber Cloud

Post: # 70106Post Karl K
Fri Jul 19, 2019 6:36 pm

There is always the hope that second generation offspring of 'Manipur Magic' and 'Amber Cloud' will approximate the good qualities combined with reliable rebloom.

'Susan Louise' is an almost-duplicate of 'Belle Portugaise', but grows and blooms like a tall HT.
http://bulbnrose.x10.mx/Roses/Rose_Pict ... ouise.html

I don't have experience growing Giganteas, so here's some advice from an expert.
Journal of Heredity, 20:304-307 (1929)
Rosa Gigantea And Its Hybrids
H. Cayeux

Up to this time, Rosa gigantea had been considered, and rightly, as a shy bloomer. The reason for this was that all the specimens then cultivated came from seed which developed so vigorously as to produce stems from 8 to 10 meters (26 to 33 feet) long in a single year. As a result of this, they bloomed with difficulty.

Since then grafting has been resorted to with satisfactory results. By using only flowering branches for grafting wood, the abundance of the blossoms has been considerably increased—so much so, that every plant propagated by cleft grafting upon Rosa indica, for instance, produced numbers of roses as early as the second year.

Plants which are still more generous bloomers can be obtained by top grafting Rosa gigantea, in the same manner upon Tea-roses which have been grafted on the Eglantine rose. Plants thus obtained, cultivated in large pots, make a bushy growth and flower abundantly, although attaining a height of no more than 1.20 to 1.50 meters (46 to 58 inches). I will add that formerly I used this method of cultivation in order than I could have at my disposal small plants, which permitted me to prepare the flowers easily before being hybridized, without having to use a stool or ladder.
http://bulbnrose.x10.mx/Roses/breeding/gigantea.htm

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