HelpMeFind Roses, Clematis and Peonies
Roses, Clematis and Peonies
and everything gardening related.
most recent 7 days ago HIDE POSTS
Initial post 9 days ago by thebig-bear
Does anyone know whether R. Spinosissima is self-sterile? And are the garden hybrid varieties also self-sterile?

I have seen this mentioned in an article I was just reading, and was left curious, especially as my pink garden variety rarely produces hips for me, despite flowering prolifically.

The article in question is "Durham Wild Roses" by J. W. Heslop Harrison, for those that are interested.

Many thanks in advance.
Reply #1 of 2 posted 8 days ago by Plazbo
Likely varies to some degree with species from one individual to another, some being better hip parents than others.

I have an unknown white (someone bought an old place and no labels and I got a sucker...I don't recommend sticking a spino sucker in the ground, spreads) spinosissima, assume just straight species given all it's habits and traits.

It doesn't set a huge number of hips (maybe half of flowers) but it sets them. Of those that germinated, many of them seemed like straight spinosissima (no others in the garden at that time except the diploid pimps like hugonis on the other side of the garden), while others were obvious hybrids with things near it.

in the references there's one "Cross- and self-compatibility in various species of the genus Rosa"

which says
"R. spinosissima L. Ploidy, Ploidy 4x
Pollen fertility 97.7%
Selfed Fruit set 75.8%
Selfed Seed set 58.7%"

which isn't too far off what I'm seeing with mine (just less hip set)

Meanwhile at a public garden nearby there is plants of Single Cherry (and something labeled Single Purple) that produce a lot of hips. Seedlings from those show no obvious hybridity but who knows if they are self or just crosses between the two.
Reply #2 of 2 posted 7 days ago by thebig-bear
Great answer. Very interesting stuff. Thank you.
most recent 5 OCT SHOW ALL
Initial post 9 NOV 20 by Ambroise Paré
Hi. This rose is s typical bourbon , leaves , prickles etc . Very good scent. Blooms in flushes ( in my area roses reflower very little ) and good production of hips . Is the rose in commerce an impostor?
Reply #1 of 2 posted 25 NOV 20 by thebig-bear
I agree with your points - superb scent, at least a decent second flush in autumn in most years, and a reasonable if not prolific amount of hips. I have three that have formed from crosses I have made this year, compared to 2 that didn't form.

I am really starting to think that this rose may well have been misidentified.
Reply #2 of 2 posted 5 OCT by Ambroise Paré
I wonder why this is not better Known
most recent 5 OCT HIDE POSTS
Initial post 5 OCT by thebig-bear
Very nice!
most recent 15 AUG SHOW ALL
Initial post 15 NOV 16 by thebig-bear
Adélaide d'Orléans is one of my absolute favourite roses. Why? Simple - it seems to thrive on neglect and rewards any pampering, doesn't care if it rains (which in the UK does matter alot!), is pretty disease resistant, and the evergreen or near evergreen foliage is attractive. The flowering is profuse and astoundingly beautiful, it is vigorous (mine has scaled 12 feet up a tree and covered it in 18 months with ease), easy to train, and the scent (to me) is medium strong, refind and delicious. What more could I ask? It really should be in every single garden.
Reply #1 of 2 posted 15 NOV 16 by Jay-Jay
Thank You for this recommendation!
Reply #2 of 2 posted 15 AUG by Smtysm
I couldn't agree more. It's my fave of all time.
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