Search found 101 matches

by Kevin Brownlee
Fri Jul 12, 2019 9:55 am
Forum: Rose Hybridizers Association Forum
Topic: Variegated roses?
Replies: 35
Views: 1976

Re: Variegated roses?

Variegation from viral infection has a random expression, with little relation to leaf venation, as opposed to genetic variegation, which tends to follow veins, ribs, etc., per folks who know more than me. A plant pathologist can make an educated guess from a photo and UC Davis, Washington State Uni...
by Kevin Brownlee
Fri Dec 08, 2017 1:11 am
Forum: Rose Hybridizers Association Forum
Topic: Rosa rugosa albina spina
Replies: 10
Views: 845

Re: Rosa rugosa albina spina

Thanks, Henry. Understood. Let's call it a hoax. It sounds more substantial.
by Kevin Brownlee
Thu Dec 07, 2017 5:07 pm
Forum: Rose Hybridizers Association Forum
Topic: Rosa rugosa albina spina
Replies: 10
Views: 845

Re: Rosa rugosa albina spina

It's not a hoax, Henry, just a gag. It's frost after freezing fog. I thought that would be obvious - F32 and such. Sorry for the confusion.
by Kevin Brownlee
Wed Dec 06, 2017 12:47 pm
Forum: Rose Hybridizers Association Forum
Topic: Rosa rugosa albina spina
Replies: 10
Views: 845

Re: Rosa rugosa albina spina

I've been working with Rosa glauca, as well.
by Kevin Brownlee
Wed Dec 06, 2017 12:45 pm
Forum: Rose Hybridizers Association Forum
Topic: Rosa rugosa albina spina
Replies: 10
Views: 845

Rosa rugosa albina spina

Is there a market for a spinier rugosa that does best in cold climates?
by Kevin Brownlee
Tue Jun 20, 2017 10:31 pm
Forum: Rose Hybridizers Association Forum
Topic: Fru Dagmar Hastrup reverting/sporting?
Replies: 5
Views: 661

Re: Fru Dagmar Hastrup reverting/sporting?

Thank you, Kim. I sent the photos from my phone to my PC and managed to upload one. I couldn't duplicate whatever I did, but I'll try to upload the other photos later. In a hedge of 50 FDH that I planted nearly 20 years ago with plants from four different sources, this darker-flowered, larger-leaved...
by Kevin Brownlee
Tue Jun 20, 2017 12:16 pm
Forum: Rose Hybridizers Association Forum
Topic: Fru Dagmar Hastrup reverting/sporting?
Replies: 5
Views: 661

Fru Dagmar Hastrup reverting/sporting?

Hi, Karl - I have photos of the FDH behavior I mentioned some time ago, but they're too large to load on the Forum. I can send them to an email address, if you're still interested. I've tried what little I know how to do to get them on this site. Sorry.
by Kevin Brownlee
Sat Jun 17, 2017 11:28 am
Forum: Rose Hybridizers Association Forum
Topic: Rose sport as cutting, any advise?
Replies: 3
Views: 630

Re: Rose sport as cutting, any advise?

I agree with layering. Layering also produces a larger plant faster, since the establishing plant is still being fed by the parent plant.
by Kevin Brownlee
Sat May 20, 2017 3:00 pm
Forum: Rose Hybridizers Association Forum
Topic: Hardwood cuttings and callusing
Replies: 16
Views: 2200

Re: Hardwood cuttings and callusing

Thanks, Joe! According to NOAA, Spokane's average temps from Feb to May were 29, 40, 46 and 52 (I'd shave at least five degrees for my location), but, yes, our coldest temps were behind us. I did bury the cups in a five gallon pot to moderate the fluctuations and the soil in the pot froze frequently...
by Kevin Brownlee
Sat May 20, 2017 12:46 am
Forum: Rose Hybridizers Association Forum
Topic: Hardwood cuttings and callusing
Replies: 16
Views: 2200

Re: Hardwood cuttings and callusing

An update on the Persian Yellow cuttings... callusing, bottom heat and general pampering went nowhere. Although the cuttings appeared viable for a remarkably long time, I had 100% failure. Two cuttings that I took last fall, left in the fridge until February then stuck in 2/3 perlite and 1/3 peat an...
by Kevin Brownlee
Thu May 18, 2017 8:31 pm
Forum: Rose Hybridizers Association Forum
Topic: Rosa hemisphaerica
Replies: 2
Views: 491

Re: Rosa hemisphaerica

You're welcome, David. I'm glad you found what you needed.
by Kevin Brownlee
Wed May 17, 2017 2:57 pm
Forum: Rose Hybridizers Association Forum
Topic: Rosa hemisphaerica
Replies: 2
Views: 491

Rosa hemisphaerica

I stumbled across an older thread where several members were looking for R. hemisphaerica. If anyone's still looking, I gave Carol Newcomb at Northland Rosarium my plant several years ago and though she hasn't offered it, she said she'll take orders for next year. David, if you still need leaves, I ...
by Kevin Brownlee
Wed Mar 22, 2017 12:54 am
Forum: Rose Hybridizers Association Forum
Topic: Rosa rugosa 'Salmon Pink'?
Replies: 17
Views: 3163

Re: Rosa rugosa 'Salmon Pink'?

Karl - phyto san isn't required for US seed import. Look at small lot seed permits - they're free.
by Kevin Brownlee
Sat Mar 18, 2017 7:14 pm
Forum: Rose Hybridizers Association Forum
Topic: Species-Modern Crosses
Replies: 109
Views: 18309

Re: Species-Modern Crosses

Wow, Karl! You'll eventually have us at the Big Bang! I'd assumed the naturalizing/invasive cluster repeaters of today were species. Who knew? I'll be interested to see what else you find. Thanks!
by Kevin Brownlee
Thu Feb 16, 2017 10:58 am
Forum: Rose Hybridizers Association Forum
Topic: Species-Modern Crosses
Replies: 109
Views: 18309

Re: Species-Modern Crosses

Would this hypothesis then also assert that the multi-flowered repeat-blooming rugosas naturalized in New England, Washington State and Alaska are a hybrid and, more specifically, regeliana? That would run counter to common understanding. I admire your stamina on this subject, Karl! I agreed it's a ...
by Kevin Brownlee
Tue Feb 14, 2017 7:16 pm
Forum: Rose Hybridizers Association Forum
Topic: Species-Modern Crosses
Replies: 109
Views: 18309

Re: Species-Modern Crosses

Karl - If it helps, I've seen Rosa rugosa thunbergiana, Thunberg, var. Thunberg, and Thunberg ex. Murray, all used interchangeably. As I've seen these used, they're generally to set themselves apart from regeliana - as in this attachment from your site, thank you. I've taken that to mean Thunberg re...
by Kevin Brownlee
Tue Feb 14, 2017 11:29 am
Forum: Rose Hybridizers Association Forum
Topic: Species-Modern Crosses
Replies: 109
Views: 18309

Re: Species-Modern Crosses

Sorry, Karl - My fault for typing on my phone: thunbergiana. I'll post pics of the sporting FDHs this spring. One, that I've been meaning to dig for a few seasons, has virtually no pink left. I obtained some regeliana seed this year. It's markedly smaller than any other rugosa seed I've seen.
by Kevin Brownlee
Mon Feb 13, 2017 6:29 pm
Forum: Rose Hybridizers Association Forum
Topic: Species-Modern Crosses
Replies: 109
Views: 18309

Re: Species-Modern Crosses

Karl - I'm curious, if I'm following this thread accurately, why you don't also suspect thunbergia of being a hybrid. It's very drought tolerant. I think that's true of any plant adapted to the desert-like conditions of the beach. Fru Dagmar Hastrup strikes me as the most regeliana-like rugosa on th...
by Kevin Brownlee
Tue Feb 07, 2017 11:42 am
Forum: Rose Hybridizers Association Forum
Topic: How to deal with gall on an important seedling
Replies: 7
Views: 1337

Re: How to deal with gall on an important seedling

Judith - In my case, the gall was above ground. I cut off the affected cane and hoped for the best. That was over five years ago and it hasn't reappeared. The plant is as healthy as ever. Everyone's experience seems to be different.
by Kevin Brownlee
Fri Jan 06, 2017 6:42 pm
Forum: Rose Hybridizers Association Forum
Topic: Leaflet rooting
Replies: 15
Views: 1781

Re: Leaflet rooting

I stumbled upon this 1869 reference to rooting rose leaflets. Apparently, it was a familiar exercise.