Rose Hybridizers Association Forum

This past weekend I went through accumulated baggies of rose seed in moist peat at room temp. to take inventory and then get them into the refrigerator for their cold treatment. Most have been sitting for between a month and two months now for a warm stratification treatment before cold. There typic...

My suspicion is that they'd benefit from warm stratification first (couple months in moist substrate at room temperature or so) before their cold stratification period, like other Caninae relatives. I had much delayed germination going straight to cold where they then needed to go through the next s...

Congratulations Julie!!! Cherry FrostTM ('Overredclimb') is an incredible rose. It is also an A.R.T.S.(R) award winner for multiple regions for 2021 as well, which is a national trial with several locations across the country!! I love it for its health, vigor, and abundant clusters of gorgeous doubl...

Great advice Kim!! I just have had this one sprawling and it is crawling over its neighbors :0)

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...

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...

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...

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...

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...

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...

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...

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...

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 ...

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 ...

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,...

That's great Jim!! What will the commercial name be?

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...

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...

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 ...

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'?