Search found 399 matches

by david zlesak
Sun Oct 04, 2020 2:12 pm
Forum: Rose Hybridizers Association Forum
Topic: First Report of Phyllocoptes fructiphilus Keifer (Eriophyidae), the Vector of the Rose Rosette Virus, in Florida, USA
Replies: 3
Views: 235

Re: First Report of Phyllocoptes fructiphilus Keifer (Eriophyidae), the Vector of the Rose Rosette Virus, in Florida, US

From visits with Mark Windham, it sounds like he has a graduate student looking at what may be different. From my understanding, it sounded like the mite was less prolific South of a certain line in Texas and further East and that may be due to a combination of heat and humidity and possible mite pa...
by david zlesak
Fri Sep 25, 2020 1:21 pm
Forum: Rose Hybridizers Association Forum
Topic: Sweet Spirit
Replies: 13
Views: 738

Re: Sweet Spirit

I really like Orchid Romance, but it doesn't seem to set hips for me and it has been hard to get pollen from it with the blooms being so double. Sweet Spirit was for sale mid summer in the Home Depots here in 2 gallon pots. I wish I would have bought one now. It was really hot and they weren't being...
by david zlesak
Wed Sep 23, 2020 2:35 pm
Forum: Rose Hybridizers Association Forum
Topic: New black spot article out today
Replies: 3
Views: 327

New black spot article out today

Hi Everyone, I'm so excited this article is finally out. With the pandemic and lab restrictions I'm glad we obtained the special permissions to follow through on the additional rounds of inoculations we had ongoing in March to confirm the reactions at the same point in time on the group of roses tha...
by david zlesak
Fri Sep 18, 2020 11:18 pm
Forum: Rose Hybridizers Association Forum
Topic: Sweet Spirit
Replies: 13
Views: 738

Re: Sweet Spirit

There is a bed at Lyndale Park Rose Garden I was admiring last weekend. The plants were healthy there for black spot and mildew and looking gorgeous. That is really interesting Stefan about it getting black spot in Maryland. It may be a valuable parent to follow the resistance gene(s) it has in it t...
by david zlesak
Sat Sep 12, 2020 10:43 am
Forum: Rose Hybridizers Association Forum
Topic: RHA Zoom meeting?
Replies: 12
Views: 1354

Re: RHA Zoom meeting?

Isabella Preston working for Ag Canada in the early 1900's should be recognized as well. It wasn't until the late 1800's that making controlled crosses in roses and the profession of rose breeding became more commonplace. Others before generally raised open pollinated seed to find something unique/d...
by david zlesak
Mon Sep 07, 2020 5:25 pm
Forum: Rose Hybridizers Association Forum
Topic: Early freeze in Colorado! Save my hips!
Replies: 14
Views: 873

Re: Early freeze in Colorado! Save my hips!

I'm soo sorry. How large are the rose plants? I'm glad there are about 3 months maturation to this point. I'd be torn between covering really well and cutting the hips like cut flowers with leaves and using floral presevervative to mature them a bit longer. What a huge temperature difference.... Typ...
by david zlesak
Sat Sep 05, 2020 11:36 pm
Forum: Rose Hybridizers Association Forum
Topic: Extra plants to share of a R. wichurana seedling
Replies: 4
Views: 746

Re: Extra plants to share of a R. wichurana seedling

Hi Philip! Kardinal Kolorscape doesn't set too many hips here either, but the couple plants I have routinely set a few hips each year. I like to try to germinate them, but often nothing germinates. Here are a couple pictures of the original seedling of the fertile diploid single red op of Kardinal K...
by david zlesak
Sat Aug 29, 2020 4:08 pm
Forum: Rose Hybridizers Association Forum
Topic: Extra plants to share of a R. wichurana seedling
Replies: 4
Views: 746

Extra plants to share of a R. wichurana seedling

Thank you Henry for the recent great post about the two QTL regions on chromosomes 3 and 5 in R. wichurana contributing resistance to black spot. I suspect from knowing many of the researchers and some of the history of their work, that the R. wichurana used at least in some if not all of the popula...
by david zlesak
Fri Aug 14, 2020 1:46 am
Forum: Rose Hybridizers Association Forum
Topic: NCPN-Roses Meeting JUly 22, 2020
Replies: 6
Views: 759

Re: NCPN-Roses Meeting JUly 22, 2020

Hi Henry, It is so true we need to keep improving methods to both accurately detect viruses of concern in our roses and to also optimize methods to clean infected roses of virus that can hopefully work on a wide range of genotypes. That is interesting about the discrepancy in costs between the 2019 ...
by david zlesak
Thu Aug 13, 2020 11:54 am
Forum: Rose Hybridizers Association Forum
Topic: NCPN-Roses Meeting JUly 22, 2020
Replies: 6
Views: 759

Re: NCPN-Roses Meeting JUly 22, 2020

I'm glad you participated in the virtual meeting Henry. I'm excited we'll just delay the meeting plan and have what was planned in person in the Twin Cities for this year in the Twin Cities next year. Hopefully people would consider coming to attend. HTS is sure a great tool. As Maher shared, it is ...
by david zlesak
Sat Jul 25, 2020 11:37 am
Forum: Rose Hybridizers Association Forum
Topic: Problem with rabbits
Replies: 3
Views: 508

Re: Problem with rabbits

I fight them too and don't have a reasonable way to put up enough really solid fencing to exclude them (dig chicken wire into the ground deep enough all around the perimeter and have the above ground fence high enough... I sometimes live trap them if there are some I notice hanging around. For deer,...
by david zlesak
Mon Jul 20, 2020 7:42 pm
Forum: Rose Hybridizers Association Forum
Topic: Jim Sproul has patented a rose
Replies: 3
Views: 696

Re: Jim Sproul has patented a rose

That's great Jim!! What will the commercial name be?
by david zlesak
Sat Jul 04, 2020 3:10 pm
Forum: Rose Hybridizers Association Forum
Topic: Rose Seed Germination
Replies: 17
Views: 2211

Re: Rose Seed Germination

Hi Edgar, I like germinating in baggies too. It works well for me since I have small numbers of seeds from many crosses typically and it saves space. I like to get the seeds out of the hips relatively soon after harvest and get them into moistened peat moss in baggies. I saturate the peat and then t...
by david zlesak
Fri Jul 03, 2020 1:15 am
Forum: Rose Hybridizers Association Forum
Topic: Midas Touch as a parent
Replies: 3
Views: 803

Midas Touch as a parent

I was impressed with the petal substance and rich color of Midas Touch and bought one this spring. It would be great to learn other's experience with it. I'm trying to use it as a parent and hips seem so be starting from crosses onto it so far and the anthers seem to shed pollen. It looks like there...
by david zlesak
Sun Jun 21, 2020 10:58 am
Forum: Rose Hybridizers Association Forum
Topic: Rebloomers genes
Replies: 20
Views: 3234

Re: Rebloomers genes

I haven't heard of akbp before. I tried to do a little searching, but am having a hard time finding resources for this gene. Would you share a link or more information about it? My assumption has been that the climbing sports of rebloomers are just a disruption of the RoKSN gene with the transposon ...
by david zlesak
Tue Jun 16, 2020 9:47 am
Forum: Rose Hybridizers Association Forum
Topic: 'Banshee' for hybridizing...
Replies: 16
Views: 2435

Re: 'Banshee' for hybridizing...

Hi Tom! Wow, I love your hybrid's glossy dark, large foliage and vigorous growth. It is beautiful!! How did fragrance come through the generations from 'Banshee'?
by david zlesak
Sun Jun 07, 2020 2:26 pm
Forum: Rose Hybridizers Association Forum
Topic: Roses with relatively better Japanese beetle tolerance
Replies: 9
Views: 1020

Roses with relatively better Japanese beetle tolerance

A friend at the U of Minnesota is a biochemist and they are looking at biochemical components between genotypes of a specieis that differ for tolerance with the goal to understand that source of better tolerance/resistance for future deterrent sprays, etc. They are looking at grapes, birch, and I th...
by david zlesak
Tue May 26, 2020 10:26 am
Forum: Rose Hybridizers Association Forum
Topic: A beginner's question
Replies: 4
Views: 606

Re: A beginner's question

I used to have more of that than now. I germinate the seed in baggies and transplant them out as seedlings with cotyledons just opening typically. If I don't use plastic baggies or plastic domes over the trays at first it seems like the humidity drop on a sensitive seedling can dry out the growing p...
by david zlesak
Tue May 26, 2020 10:20 am
Forum: Rose Hybridizers Association Forum
Topic: Multiflora Rose review
Replies: 6
Views: 1006

Re: Multiflora Rose review

Thank you Matt for all your insights and for advocating to the legislature. That sure makes a lot of sense about "closing he barn door after the horse has bolted." I'm glad there is the allowance or research and educational purposes. I got some 'Burr Multiflora' from UC Davis and their clean stock p...
by david zlesak
Sat May 16, 2020 7:29 pm
Forum: Rose Hybridizers Association Forum
Topic: Multiflora Rose review
Replies: 6
Views: 1006

Re: Multiflora Rose review

Thanks for posting this nice review Henry. It was interesting to read that in MN the idea was that R. multiflora as a rootstock didn't seem to be used anymore. There are a few, more specialty, nurseries that sell roses on R. multiflora (I won't name them now). The roses actually grow very very nicel...