'Cal Poly' X (rugosa x davidii)

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tsilvers
Posts: 246
Joined: Sun Dec 18, 2011 11:39 am

'Cal Poly' X (rugosa x davidii)

Post: # 71520Post tsilvers
Wed May 27, 2020 9:53 pm

Regardless of the true identity of the plant I bought as davidii (maybe davurica? or something else), the F1 from its pollen on rugosa has been one of the healthiest roses I've grown here in Maryland. So several years ago, I used pollen of that F1 on the yellow miniature 'Cal Poly'.
I got seven seedlings. They've been VERY variable but all once-bloomers. Here are some pictures of the best three for vigor. #1 must not have gotten the miniature trait because it's like an octopus reaching out in all directions.#2 and #3 seem like they got the mini habit. #2 has flower size in proportion to that size and is dense and compact. #3 has relatively large flowers for the foliage and plant size.
#1 had one bloom last season but it was eaten by beetles, so it'll be fun to see what the apricot buds look like when they open tomorrow or the next day.
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tsilvers
Posts: 246
Joined: Sun Dec 18, 2011 11:39 am

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71521Post tsilvers
Wed May 27, 2020 9:55 pm

A few more pictures...
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tsilvers
Posts: 246
Joined: Sun Dec 18, 2011 11:39 am

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71522Post tsilvers
Wed May 27, 2020 9:55 pm

And two more...
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roseseek
Posts: 5131
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71524Post roseseek
Wed May 27, 2020 10:22 pm

Congratulations, Thomas!
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

jbergeson
Posts: 1395
Joined: Thu Dec 15, 2011 11:54 pm

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71525Post jbergeson
Wed May 27, 2020 10:44 pm

Cool!

tsilvers
Posts: 246
Joined: Sun Dec 18, 2011 11:39 am

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71535Post tsilvers
Fri May 29, 2020 8:45 pm

Thanks Kim and Joe! :)
Here's a far off picture of all three seedlings
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and some of #1 opening today
CPx(RxD) #1 bud.JPG
CPx(RxD) #1 open.JPG
Can't say I'm crazy about the color pattern but it's interesting to see such variety. Wish I'd gotten a much bigger population of these.
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roseseek
Posts: 5131
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71536Post roseseek
Fri May 29, 2020 10:30 pm

I actually find the pattern quite interesting. But, I've also always been a sucker for stripes, stippled and Hulthemia blotches, too, until blotches became "common". But I still love heavily stippled, veined and striped!
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

Rob Byrnes
Posts: 1814
Joined: Thu Dec 15, 2011 2:34 pm

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71572Post Rob Byrnes
Wed Jun 03, 2020 12:10 pm

Great cross Thomas with great results. Love the color on #1!
Rob Byrnes

Historic Village of Roebling, NJ Zone 7a
On the right bank of the Delaware River

mntlover
Posts: 209
Joined: Sat Dec 29, 2018 7:11 pm

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71584Post mntlover
Fri Jun 05, 2020 1:45 pm

Congrats! Like the diversity of results. Especially like the foliage on #1, makes me think of a shiny Therese Bugnet. Do the others have texture to their foliage also, or was that also diverse?
Duane

tsilvers
Posts: 246
Joined: Sun Dec 18, 2011 11:39 am

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71587Post tsilvers
Fri Jun 05, 2020 5:37 pm

Thanks guys!
I'll try to get a picture that compares the foliage of the different seedlings. The foliage varied a lot too but at least two seedlings have some of that texture.

wickertgardens
Posts: 7
Joined: Fri Nov 09, 2018 3:21 pm

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71637Post wickertgardens
Wed Jun 10, 2020 5:06 pm

The color on #3 is the kind that typically finds a spot in my shopping cart, even when I'm out of room to plant it.
Wickert Gardens
Madison, OH
wickertgardens@gmail.com

philip_la
Posts: 1114
Joined: Thu Dec 15, 2011 10:28 pm

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71679Post philip_la
Tue Jun 16, 2020 9:32 am

Cool, Tom! Very intriguing pedigree. Are they all shamelessly healthy as well?
Philip F.
Zone 8 / Sunset Zn 30 (Austin, TX -- formerly New Orleans, LA)

tsilvers
Posts: 246
Joined: Sun Dec 18, 2011 11:39 am

Re: 'Cal Poly' X (rugosa x davidii)

Post: # 71686Post tsilvers
Tue Jun 16, 2020 2:49 pm

Unfortunately, they are NOT as disease free as papa. But they're not nearly as bad as 'Cal Poly' either. I was hoping some dominant disease resistance genes would be passed down from the pollen parent but it seems like they're more intermediate in that regard.
#2 seems to be the best for health. #1 and #3 are about even for disease issues - mostly some leafspotting and mildew - but still better than many moderns.

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