Search found 195 matches

by Plazbo
Sun Apr 04, 2021 1:28 am
Forum: Rose Hybridizers Association Forum
Topic: New article on repeat bloom
Replies: 8
Views: 557

Re: New article on repeat bloom

Seems to line up with a number of things posted on the forums in recent years. Potentially useful info for hardy breeders in there for some copia sources. Also of note is Belle Poitevine and R.Rugosa having the same WT A181 setup as Cristata/Crested Moss given the difference in blooming, unsure what...
by Plazbo
Wed Mar 31, 2021 9:18 pm
Forum: Rose Hybridizers Association Forum
Topic: Fluctuating temps to promote germination?
Replies: 9
Views: 751

Re: Fluctuating temps to promote germination?

My experience in a significantly different climate (Sydney, Australia), I don't stratify because I just make mold (and don't really want mold in the fridge) and I don't need to for whatever reason. Heat doesn't seem to be a problem other than germination doesn't seem to happen over a certain temp. I...
by Plazbo
Mon Mar 15, 2021 1:15 am
Forum: Rose Hybridizers Association Forum
Topic: Colchicine induction of ‘Old Blush’ 2n pollen for the hybridization and breeding of tetraploid rose
Replies: 6
Views: 809

Re: Colchicine induction of ‘Old Blush’ 2n pollen for the hybridization and breeding of tetraploid rose

If you doubled the chromosomes of the whole plant then yes, there'd be some differences, often bigger/thicker/stiffer parts as the cells are bigger. You don't necessarily need to double the whole plant to get reproductive parts of a higher ploidy though (as shown in the paper where they were just in...
by Plazbo
Mon Mar 08, 2021 8:47 pm
Forum: Rose Hybridizers Association Forum
Topic: Rose seeds for sale this spring at a box store!
Replies: 4
Views: 799

Re: Rose seeds for sale this spring at a box store!

If not none germinating I'd hazard a guess they are thinking none of them will survive...lack of drainage holes, people like to over water.
by Plazbo
Thu Feb 11, 2021 12:40 am
Forum: Rose Hybridizers Association Forum
Topic: New: Nitty Gritty Series
Replies: 2
Views: 431

Re: New: Nitty Gritty Series

Can see other images on their site

https://www.monrovia.com/catalogsearch/ ... tty+Gritty

seems red isn't up (yet)?

Pink's image is more interesting than pink tends to conjure.
by Plazbo
Thu Jan 28, 2021 6:43 pm
Forum: Rose Hybridizers Association Forum
Topic: Petite Knock Out Rose - AVOID
Replies: 64
Views: 8121

Re: Petite Knock Out Rose - AVOID

More of a joke but

Someone cross it with Applause:)
by Plazbo
Fri Jan 08, 2021 10:50 pm
Forum: Rose Hybridizers Association Forum
Topic: Unusual Species to Use?
Replies: 4
Views: 500

Re: Unusual Species to Use?

R. Primula, Hugonis and Xanthina do develop bronzy colored "spots" on the aging foliage prior to shedding it, but I'm not so sure it's "black spot" or not as, again, that isn't a traditional issue here. Hugonis and Xanthina get something here (sydney, australia) too but only at the dscarding leaf t...
by Plazbo
Wed Nov 25, 2020 2:49 am
Forum: Rose Hybridizers Association Forum
Topic: Yellow Species Roses?
Replies: 9
Views: 916

Re: Yellow Species Roses?

I've started using Golden Cheronese....it didn't start setting hips til it's third year. There's a theory on these forums that the deeper yellow from Rosa Ecae is only inherited from seed, part of the reason behind using Golden Cheronese (and that R. Ecae just hasn't been accessible). The seed also ...
by Plazbo
Sat Nov 14, 2020 9:37 pm
Forum: Rose Hybridizers Association Forum
Topic: 0% germination, what am I doing wrong
Replies: 8
Views: 789

Re: 0% germination, what am I doing wrong

There's some research papers about germination being better below 15C and above freezing (so below 60F). Seems to generally hold true for me (I sow outside, often directly from hip in March/Autumn/Southern Hemisphere) and usually get a bunch of germination from April onwards (which is typically when...
by Plazbo
Fri Nov 13, 2020 8:23 pm
Forum: Rose Hybridizers Association Forum
Topic: Splash and Dash equals Bad Technique?
Replies: 36
Views: 2665

Re: Splash and Dash equals Bad Technique?

Anyone know much/tried anything with 6-Benzylaminopurine or 1-Naphthaleneacetic acid? Comes up in other genus of plants, usually at 0.1% concentrations which seems to help with fertility in some cases.
by Plazbo
Thu Nov 12, 2020 6:34 pm
Forum: Rose Hybridizers Association Forum
Topic: Germinating Alba seeds...question...
Replies: 8
Views: 961

Re: Germinating Alba seeds...question...

Hi, David, When I did a lot of caninas, I used our natural winter here, which hovers between 33-40F, is dark, and very wet. So an outdoor temperate rainforest winter will do the trick. Only 1-2 days per winter will there be light snow, and about 1-2 weeks total have frost w/no moisture in the air. ...
by Plazbo
Tue Nov 10, 2020 5:45 pm
Forum: Rose Hybridizers Association Forum
Topic: Splash and Dash equals Bad Technique?
Replies: 36
Views: 2665

Re: Splash and Dash equals Bad Technique?

Pollen pouches are separate and related by trait or class yes. To me it doesn't matter which pollen parent/s succeed or not since I'm looking for specific traits in the seedlings, ie Yellow, if the seedlings don't have yellow then it probably doesn't benefit me in my goals to keep them. Similar with...
by Plazbo
Mon Nov 09, 2020 11:13 pm
Forum: Rose Hybridizers Association Forum
Topic: Splash and Dash equals Bad Technique?
Replies: 36
Views: 2665

Re: Splash and Dash equals Bad Technique?

I tend to repeat pollination, if the blooms still there why not? But I also mostly mix pollen into loose groups (ie 2n species, 4n OGR, Yellow, etc) so pollen isn't really lacking. Mostly came from some research paper about beardless iris (granted different genus and different process but who knows)...
by Plazbo
Fri Nov 06, 2020 2:15 am
Forum: Rose Hybridizers Association Forum
Topic: Need Advice - I'm Just Starting Out
Replies: 10
Views: 1124

Re: Need Advice - I'm Just Starting Out

I am more of a beginner than you, but you mention purple roses and I am over the moon with my purple floribunda Blue For You (Pejamblu). In the summer it produced many beautiful semi-double lilac-purple flowers, which hold themselves up well, no drooping, followed by beautiful large orange-red hips...
by Plazbo
Mon Nov 02, 2020 1:40 am
Forum: Rose Hybridizers Association Forum
Topic: 2020 Seed Exchange
Replies: 10
Views: 1301

Re: 2020 Seed Exchange

Spins are two years too (same with the diploid yellow pimps), not difficult, just slow if using as seed parent.
by Plazbo
Tue Oct 20, 2020 2:41 am
Forum: Rose Hybridizers Association Forum
Topic: This is news to me
Replies: 12
Views: 1289

Re: This is news to me

It should be noted that many plant trademarks and trade designations are already being used or applied in ways that are at odds with the intended purpose, since they are meant to denote a business or brand/line rather than individual varieties. That happens here in Australia too. It's interesting h...
by Plazbo
Tue Oct 20, 2020 2:30 am
Forum: Rose Hybridizers Association Forum
Topic: Experience with prospective parents?
Replies: 6
Views: 1069

Re: Experience with prospective parents?

Plum Perfect hasn't been a willing seed parent for me, sometimes but not reliably...nothing of particular interest from it's seedlings. Quicksilver only came out so can't comment on fertility, it is a lot pinker than a lot of the marketing pictures indicate which rubs me the wrong way. Another newis...
by Plazbo
Sat Aug 01, 2020 10:24 pm
Forum: Rose Hybridizers Association Forum
Topic: Cercospora
Replies: 12
Views: 2243

Re: Cercospora

I have Many Happy Returns, it spots here not super bad but nothing special either. It can produce healthier seedlings than itself, some seem near completely spot free here but often some other issue for my conditions (ie seedling failure in extreme heat). It's probably worth someone in a more temper...
by Plazbo
Mon Jul 27, 2020 6:50 pm
Forum: Rose Hybridizers Association Forum
Topic: All A'Twitter x Yatkan
Replies: 35
Views: 4846

Re: All A'Twitter x Yatkan

I don't seem to have downy mildew here, although I'm not sure I know what it looks like. A lot like BS. Just usually more dark purple or brown based, not as neat (any shape, very irregular where blackspot is loosely spot shaped) and leaves don't typically yellow the same way as BS. Also tends to st...
by Plazbo
Mon Jul 27, 2020 1:03 am
Forum: Rose Hybridizers Association Forum
Topic: Rebloomers genes
Replies: 24
Views: 4673

Re: Rebloomers genes

Paul Guerts E2506 sort of fits that
https://www.helpmefind.com/rose/l.php?l=2.74408.0

Based on posts he made back in 2015/2016 on these forums that was the only one that repeated, he did go on to breed it with others rugosa and rugosa hybrids (like schneezwerg and metis) but no info on those results.