Search found 191 matches

by Plazbo
Mon Oct 09, 2017 10:13 pm
Forum: Rose Hybridizers Association Forum
Topic: Rose Rosette News
Replies: 16
Views: 1940

Re: Rose Rosette News

That's troubling :/ often a small percentage are resistant to these sort of things.
by Plazbo
Mon Oct 09, 2017 9:45 pm
Forum: Rose Hybridizers Association Forum
Topic: Rose Rosette News
Replies: 16
Views: 1940

Re: Rose Rosette News

So what does this mean? That no commercial cultivar is safe?
by Plazbo
Mon Jun 26, 2017 3:39 am
Forum: Rose Hybridizers Association Forum
Topic: How long do we wait for first bloom?
Replies: 11
Views: 1694

Re: How long do we wait for first bloom?

I'm possibly too new to offer much with roses specifically (a decade or so with various other plants) but really it comes down to whatever the breeder is willing to accept and then skewing the population as a result. Sure when dealing with species or a few generations from you will need to be a litt...
by Plazbo
Tue Jun 06, 2017 6:25 pm
Forum: Rose Hybridizers Association Forum
Topic: Why do some seedlings "close" at nite?
Replies: 8
Views: 1130

Re: Why do some seedlings "close" at nite?

In many other plants it's about protecting sexual parts, the insects that pollinate them aren't out at night, frost damage (due to temp drop at night), rain, etc.

It's probably connected to that in some way.
by Plazbo
Sun Jun 04, 2017 5:40 pm
Forum: Rose Hybridizers Association Forum
Topic: Pretty seedling out of Sweet Spot Calypso
Replies: 11
Views: 2436

Re: Pretty seedling out of Sweet Spot Calypso

SSC is very disease prone and so far I have struggled to get around this. It had very bad mildew shortly after I got it (potted) but this disappeared once put in the ground where the supply of water was more reliable. This gave way to black spot and both my plants completely defoliated. Just an upd...
by Plazbo
Thu Jun 01, 2017 7:26 am
Forum: Rose Hybridizers Association Forum
Topic: What is your current choice of stratification medium?
Replies: 25
Views: 4239

Re: What is your current choice of stratification medium?

Harvest seeds end of Feb/beginning of March, sown within a week in small flats (or in reality, ferrero rocher chocolate clear plastic containers, easy to maintain moisture, they sit behind glass so mileage may vary if in direct UV) with maybe an inch of potting medium, they germinate and develop a f...
by Plazbo
Wed May 31, 2017 5:56 pm
Forum: Rose Hybridizers Association Forum
Topic: What is your current choice of stratification medium?
Replies: 25
Views: 4239

Re: What is your current choice of stratification medium?

I don't, all germination happens during autumn and winter for me, it's the first day of winter here and many of the seeds I planted the early autumn (march) have tiny little flower buds. Hurray Australia! I never had much success with stratifying of any species (alstromeria, tulips, iris reticulata,...
by Plazbo
Fri May 26, 2017 8:02 pm
Forum: Rose Hybridizers Association Forum
Topic: Pretty seedling out of Sweet Spot Calypso
Replies: 11
Views: 2436

Re: Pretty seedling out of Sweet Spot Calypso

The thing I get a lot from E4Y is drastic fading of the blotch in the sun. Jim has done a lot of work on this front and is making excellent progress on developing sin-fast blotches but it sure won't come from E4Y. Just on this, given your current preference to 4YEO, HMF seems to show it fades terri...
by Plazbo
Mon May 15, 2017 6:11 am
Forum: Rose Hybridizers Association Forum
Topic: Breeding with r.rubiginosa (aka Sweet Briar)
Replies: 14
Views: 2840

Re: Breeding with r.rubiginosa (aka Sweet Briar)

So I've been devouring the forum for information. I'm highly interested in the sweet briar and have learnt that: 1. has a configuration of R rubiginosa 4+1 2. foliage scent is passed maternally (given the 4+1 that's fair enough) now given the 4+1 kind of points out that pollen essentially behaves as...
by Plazbo
Tue May 09, 2017 5:33 pm
Forum: Rose Hybridizers Association Forum
Topic: Pretty seedling out of Sweet Spot Calypso
Replies: 11
Views: 2436

Re: Pretty seedling out of Sweet Spot Calypso

I am a little bit, just seedlings a few weeks old with banksiae and a couple with rugosa at this point. Sweet Spot Calypso is very available here (Sydney, Australia) as the big hardware chain (bunnings) stock it. Only concern with Sweet Spot Calypso is mildew, it was really really covered in it when...
by Plazbo
Tue May 09, 2017 2:58 am
Forum: Rose Hybridizers Association Forum
Topic: F3 Hybrid Rosa Virginiana Seedlings
Replies: 74
Views: 8851

Re: F3 Hybrid Rosa Virginiana Seedlings

The second seedling O18 P20 is a (Baronne ed Rothschild X Mme C Testou) X Sympathie X (Mimas X R. virginiana). It is also displaying bluish foliage colouring with good vigour. I really like the foliage colour of that one but see no other mention of it in the forum search. Any other pics or details ...