Search found 159 matches

by donaldvancouver
Thu Jul 02, 2020 10:54 pm
Forum: Rose Hybridizers Association Forum
Topic: Handling cold-hardiness
Replies: 9
Views: 230

Re: Handling cold-hardiness

Hi- I agree that there is more to hardiness than cold tolerance. There is Zone 3 with constant deep snow cover, and Zone 3 with freeze/thaw cycles, drying winds, drought, bare ground, and so on. This is why a place like Calgary is so challenging for gardeners; on pape it's not that cold, but there's...
by donaldvancouver
Sun Jun 21, 2020 8:53 pm
Forum: Rose Hybridizers Association Forum
Topic: My method in a nutshell, esp. the case for using mixed pollen
Replies: 8
Views: 296

Re: My method in a nutshell, esp. the case for using mixed pollen

You’ve inspired me to try my first pollen blend. I am so tired of organizing vials of pollen, and now that I’ve narrowed my breeding goals I think a pollen mix of the right staminate parents might do the trick.
by donaldvancouver
Thu Apr 30, 2020 9:50 am
Forum: Rose Hybridizers Association Forum
Topic: Sure they improve, but how much, realistically?
Replies: 15
Views: 786

Re: Sure they improve, but how much, realistically?

Philip- I am also investing in the Kordes roses as breeders; they are amazingly healthy and robust. I am finding that as I run out of room, I have to develop strict rubrics about how I value seedlings. Colour, percent of leaves without spot at four different times of the season, plant form, etc. Eve...
by donaldvancouver
Wed Apr 29, 2020 5:37 pm
Forum: Rose Hybridizers Association Forum
Topic: Sure they improve, but how much, realistically?
Replies: 15
Views: 786

Re: Sure they improve, but how much, realistically?

I have never had a seedling change colour radically from young to old. Changing overall form, yes. Increasing petal count, I think so. That said, I don't think I've ever had a seedling really surprise me as it aged in terms of the quality of the flower. Pretty much what you see in the first year is ...
by donaldvancouver
Mon Dec 17, 2018 9:50 pm
Forum: Rose Hybridizers Association Forum
Topic: Three-year screening for cold hardiness of garden roses
Replies: 5
Views: 268

Re: Three-year screening for cold hardiness of garden roses

Larry- my acclimation will be outdoors: the roses will have already been at somewhere between 4c and -2c for days or weeks. That's why I'm doing this now, and not in July. And yes the shock in the freezer might kill them- but roses in, say, Alberta need to survive sudden drops from 0 to -20c all the...
by donaldvancouver
Mon Dec 17, 2018 11:18 am
Forum: Rose Hybridizers Association Forum
Topic: Three-year screening for cold hardiness of garden roses
Replies: 5
Views: 268

Re: Three-year screening for cold hardiness of garden roses

Thanks Henry- I'm attempting a low-tech version of this experiment this winter. Rather than conditioning the sections of stem with sugars, I'm waiting for them to shut down for the winter (which seems to take place around January 1 most years where I live.) I will freeze sections of stem to -20c for...
by donaldvancouver
Sun Sep 16, 2018 12:24 pm
Forum: Rose Hybridizers Association Forum
Topic: Show-and-tell from last season?
Replies: 19
Views: 2155

Re: Show-and-tell from last season?

I can't wait to see BERGmeowpoo.
by donaldvancouver
Mon Jun 11, 2018 11:45 am
Forum: Rose Hybridizers Association Forum
Topic: Diploid vs Tetraploid - a crossroads
Replies: 15
Views: 1115

Re: Diploid vs Tetraploid - a crossroads

What is an FLC? Can we please define three-letter acronyms if we must use them? Thanks.
by donaldvancouver
Sat Mar 17, 2018 8:17 pm
Forum: Rose Hybridizers Association Forum
Topic: Change in the US plant patent novelty requirements
Replies: 14
Views: 3545

Re: Change in the US plant patent novelty requirements

Ok that was a bit of thread-hijack right there. We seem to do a lot of that around here.
by donaldvancouver
Thu Mar 15, 2018 12:31 pm
Forum: Rose Hybridizers Association Forum
Topic: Change in the US plant patent novelty requirements
Replies: 14
Views: 3545

Re: Change in the US plant patent novelty requirements

Hello- I'd like to revive this post (please let me know if it has been revived elsewhere.) Have there been updates to the issue of novelty requirements in US patents? Has this been tested in court yet? Has "novelty" been more clearly defined? Has the law reduced the sharing of new plants among hybri...
by donaldvancouver
Wed Mar 14, 2018 11:31 am
Forum: Rose Hybridizers Association Forum
Topic: Purples/Lavenders for breeding
Replies: 26
Views: 2988

Re: Purples/Lavenders for breeding

Hi- Poseidon is remarkably disease-resistant. Really impressive. The flowers are not as beautiful as other mauves, but from a breeder's perspective it might be the most interesting.
by donaldvancouver
Fri Mar 09, 2018 1:09 pm
Forum: Rose Hybridizers Association Forum
Topic: Newbie(ish) question
Replies: 15
Views: 1271

Re: Newbie(ish) question

Don- thanks very much- that thread is really informative and I don't think I'd seen it before.
by donaldvancouver
Wed Mar 07, 2018 6:28 pm
Forum: Rose Hybridizers Association Forum
Topic: Newbie(ish) question
Replies: 15
Views: 1271

Re: Newbie(ish) question

It's a noble goal. For me, once I select for fungal resistance, cold hardiness, bloom size shape and colour, plant architecture and scent, I'll settle for it just having leaves.
by donaldvancouver
Mon Mar 05, 2018 9:58 pm
Forum: Rose Hybridizers Association Forum
Topic: Newbie(ish) question
Replies: 15
Views: 1271

Re: Newbie(ish) question

On this subject, does anyone have access to market research on rose preferences? We often hear that colour (anything but pink) is a top influencer in a decision to purchase a rose. Many of us assume dark, shiny leaves are more marketable—do we have any market research to back this up? Kim, you've me...
by donaldvancouver
Wed Feb 21, 2018 11:04 am
Forum: Rose Hybridizers Association Forum
Topic: World Federation Rose Societies conference - Copenhagen
Replies: 5
Views: 691

Re: World Federation Rose Societies conference - Copenhagen

I noticed the Canadian speaker was 'to be determined.' Did someone drop out?
by donaldvancouver
Tue Feb 20, 2018 8:49 pm
Forum: Rose Hybridizers Association Forum
Topic: Beginner Question, How to Streamline Germination & Planting?
Replies: 6
Views: 941

Re: Beginner Question, How to Streamline Germination & Plant

I think any of your methods will work. I would favour 1 or 2. I haven't had much luck with direct sowing in the ground—it's hard to weed around them, and if the top 1/4" of your soil dries out it can kill your seedlings. Pots or trays give you better control, and potentially better potting media tha...
by donaldvancouver
Mon Jan 08, 2018 3:17 am
Forum: Rose Hybridizers Association Forum
Topic: cold-hardy breeders
Replies: 11
Views: 1324

Re: cold-hardy breeders

Paul- thanks for the tip. I didn't realize Brentwood Bay were still in business- last time I visited it looked like they were closed for good.
by donaldvancouver
Mon Dec 25, 2017 1:13 pm
Forum: Rose Hybridizers Association Forum
Topic: Visions of Sugar Plums
Replies: 7
Views: 659

Re: Visions of Sugar Plums

Hi I tend toward simplicity. I find numbers and codes to be a lot of cognitive work to keep track of, so I identify each parent with an acronym based on the plant's name: Bonica becomes BONI, Golden Celebration GCEL, Easy Going EAGO and so on. With each cross I just note the date and the pollen pare...
by donaldvancouver
Wed Dec 20, 2017 9:05 am
Forum: Rose Hybridizers Association Forum
Topic: cold-hardy breeders
Replies: 11
Views: 1324

Re: cold-hardy breeders

Thanks all- this is very helpful. I'm hoping I can breed disease resistance in from the tender side- I seem to be having some luck doing so. Some of the new Kordes roses are amazing- Eliza, Desmond Tutu, the Fairy Tale series- as well as some of the Harkness and Meillands. Very little fungal disease...
by donaldvancouver
Tue Dec 19, 2017 10:38 am
Forum: Rose Hybridizers Association Forum
Topic: cold-hardy breeders
Replies: 11
Views: 1324

cold-hardy breeders

Hi- I'm hoping to round out my collection of cold-hardy breeding plants. For the next year or two I'm concentrating on breeding repeat-blooming z3 roses with disease-resistant tender and half-tender roses. Tetraploids would be great but not a deal-breaker. I have Frontenac and L83, and Bonica (not q...