Search found 1393 matches

by jbergeson
Tue Jul 07, 2020 4:09 pm
Forum: Rose Hybridizers Association Forum
Topic: hardiest reblooming diploid?
Replies: 47
Views: 1544

Re: hardiest reblooming diploid?

Riku, I used RDXS a bit quite a few years ago but gave up because it didn't seem to pass on rebloom very often if at all, and the plant itself got some fairly ugly spotting. I had one odd reblooming seedling that came from (R. carolina x RDxS) x Commander Gillette, which is not a cross that should h...
by jbergeson
Thu Jun 25, 2020 11:54 am
Forum: Rose Hybridizers Association Forum
Topic: Yellowing of rose leaves.
Replies: 7
Views: 221

Re: Yellowing of rose leaves.

It sounds like your water might be the problem. You could use citric acid to acidify it prior to using it, if possible, or use rain water. There are pH testing strips that you can order on eBay...the more detailed the better from 4.0 to 9.0. It is fun to check your tap water's pH and then add citric...
by jbergeson
Sat Jun 20, 2020 6:41 pm
Forum: Rose Hybridizers Association Forum
Topic: Video tour including Metis and Bella Nitida
Replies: 4
Views: 207

Re: Video tour including Metis and Bella Nitida

I pretty much have missed my window to pollinate the taller, hardier, apparent Metis this year, unfortunately. A combination of being busy and burnt out and not having enough reblooming pollen available. Riku, your Metis sounds like the first one I had, which also died back last winter. My seedlings...
by jbergeson
Fri Jun 19, 2020 5:34 pm
Forum: Rose Hybridizers Association Forum
Topic: Rebloomers genes
Replies: 6
Views: 414

Re: Rebloomers genes

That's a nice bright yellow, Riku.
by jbergeson
Fri Jun 19, 2020 7:22 am
Forum: Rose Hybridizers Association Forum
Topic: Air-layering pods
Replies: 4
Views: 147

Re: Air-layering pods

Ads for these have been showing up in my facebook feed. As always, I try not to think about why.

I would like to try these or any air-layering on Hazeldean, Prairie Peace, and Harison's Yellow.
by jbergeson
Thu Jun 18, 2020 8:58 am
Forum: Rose Hybridizers Association Forum
Topic: Ploidy of Isabella Skinner (Victorian Memory).
Replies: 13
Views: 327

Re: Ploidy of Isabella Skinner (Victorian Memory).

Just looked at my pollen...all three nitida hybrids had good pollen grains of mixed sizes. It's easy to see why the 2x pollen has a competitive advantage. One of my likely tetraploid roses had very fat (closer to being round) grains. Cuthbert Grant had relatively poor looking pollen but maybe some v...
by jbergeson
Thu Jun 18, 2020 8:42 am
Forum: Rose Hybridizers Association Forum
Topic: Ploidy of Isabella Skinner (Victorian Memory).
Replies: 13
Views: 327

Re: Ploidy of Isabella Skinner (Victorian Memory).

By the way, the black, slightly textured surface of a coffee can lid is perfect for looking at pollen under a microscope.
by jbergeson
Thu Jun 18, 2020 8:41 am
Forum: Rose Hybridizers Association Forum
Topic: Ploidy of Isabella Skinner (Victorian Memory).
Replies: 13
Views: 327

Re: Ploidy of Isabella Skinner (Victorian Memory).

Hi Tony, There have been discussions about that here before and others might know more than me. I suspect different species or groups of roses might have pollen of different sizes, as well as the difference from ploidy. My pocket microscope (or maybe it's operator) doesn't have measurement capabilit...
by jbergeson
Wed Jun 17, 2020 12:12 pm
Forum: Rose Hybridizers Association Forum
Topic: Ploidy of Isabella Skinner (Victorian Memory).
Replies: 13
Views: 327

Re: Ploidy of Isabella Skinner (Victorian Memory).

I just got one in the mail this week. I can look at the pollen under a microscope when mine blooms and maybe make a guess as to the ploidy based upon the pollen.
by jbergeson
Tue Jun 16, 2020 11:11 am
Forum: Rose Hybridizers Association Forum
Topic: 'Banshee' for hybridizing...
Replies: 11
Views: 313

Re: 'Banshee' for hybridizing...

This is kind of tangential to the topic, but here is the seedling that I crossed with Banshee last year. I thought the bright color, rock solid hardiness, and masses of cheery, single blossoms might combine interestingly with Banshee's highly double blossoms.
by jbergeson
Tue Jun 16, 2020 10:07 am
Forum: Rose Hybridizers Association Forum
Topic: 'Banshee' for hybridizing...
Replies: 11
Views: 313

Re: 'Banshee' for hybridizing...

Gorgeous foliage. My Banshee (from Kim Rupert) shows pretty good hardiness here in Zone 3B. Not total cane hardiness, but more than just crown hardiness, iykwis. ("if you know what I'm saying"...just made that up but I'm sure the kids have already done it.) My question is if it will combine with mod...
by jbergeson
Sun Jun 14, 2020 12:19 am
Forum: Rose Hybridizers Association Forum
Topic: hardiest reblooming diploid?
Replies: 47
Views: 1544

Re: hardiest reblooming diploid?

Stefan, no need for you to apologize. Sending threads off on tangents is part of the fun around here. Thank you for your mature and thoughtful contributions.
by jbergeson
Sat Jun 13, 2020 9:17 am
Forum: Rose Hybridizers Association Forum
Topic: hardiest reblooming diploid?
Replies: 47
Views: 1544

Re: hardiest reblooming diploid?

Don, I suppose some time in late June or early July. Probably only a few buds showing at this time.
by jbergeson
Tue Jun 09, 2020 10:38 pm
Forum: Rose Hybridizers Association Forum
Topic: hardiest reblooming diploid?
Replies: 47
Views: 1544

Re: hardiest reblooming diploid?

For what it's worth, here are some pics of my Hansa.
by jbergeson
Mon Jun 08, 2020 10:38 pm
Forum: Rose Hybridizers Association Forum
Topic: hardiest reblooming diploid?
Replies: 47
Views: 1544

Re: hardiest reblooming diploid?

Regarding Karl's notes on Hansa: It is really odd that those old-timers didn't like the violet color. Plus it's odd that Hansa just doesn't set hips for me, pollinated or otherwise. I put one in a pot and I plan to try pollinating it in a hot greenhouse this year. Iron chlorosis is Hansa's Achilles'...
by jbergeson
Mon Jun 08, 2020 4:52 pm
Forum: Rose Hybridizers Association Forum
Topic: Yellow seedling
Replies: 12
Views: 350

Re: Yellow seedling

Don, I've got a lot of yellow seedlings this season! All the seedlings in this pic have 1048 as a seed parent. The single yellow is x Lemon Fizz and the pink ones in back are x Fruity Petals. I'm excited about the potential of 1048 as a seed parent. It gives a lot of warm colors and good color satur...
by jbergeson
Mon Jun 08, 2020 4:14 pm
Forum: Rose Hybridizers Association Forum
Topic: Yellow seedling
Replies: 12
Views: 350

Re: Yellow seedling

Julie, These are seedlings that germinated and were planted in March or April of this year....I can't remember exactly when they were planted. One important principle in rose breeding is that if a rose will be a repeat bloomer it generally blooms like this at a very young age, in it's first summer. ...
by jbergeson
Mon Jun 08, 2020 12:08 am
Forum: Rose Hybridizers Association Forum
Topic: Metis x Catherine Guelda
Replies: 3
Views: 234

Re: Metis x Catherine Guelda

The first five buds to show color from this cross are pure white.

Does anyone know why this might happen? Two distinctly pink roses combining to make pure white seedlings...

The pic is the first bud to open.
by jbergeson
Mon Jun 08, 2020 12:07 am
Forum: Rose Hybridizers Association Forum
Topic: Art Nouveau x FIVI3 descendants
Replies: 2
Views: 173

Art Nouveau x FIVI3 descendants

Last year I posted a pic of the once-blooming seedling Art Nouveau x FIVI3 (First Impression x R. virginiana). I used it in both directions hoping to recover rebloom. I used All the Rage a lot with it because I hoped ATR would allow the warm colors to come through and I hoped that ATR's very large p...