|
| FYI; I blogged today a list of my Canadian and Rugosa roses and their degree of blackspot at present (unsprayed). In Canadians, J.P. Connell, Morden Sunrise, and John Franklin are most frequently affected in my Kansas garden; see blog link below. |
Here is a link that might be useful: Garden Musings blog on Canadians and Rugosas
Follow-Up Postings:
|
| Thank you. Very interesting and shows again that zone is not an indication of desease pressure. I am in 6b (MD) and you are in 6a, almost the same zone, but I an much closer to the ocean. The differnce is striking. Olga |
|
| Thanks. While I note your qualification, I'm surprised to hear Baffin is defoliated. Has anyone else seen much disease on it? 'Robusta" here got blackspot in the pattern of "damask crud"--almost the whole leaf covered with large brownish spots. The Grootendorsts here get lots of some ugly fungus disease that I couldn't identify. |
|
- Posted by the_morden_man (Z4-Z5) Newmarket, O (My Page) on Mon, Jun 11, 12 at 21:52
| I would be really surprised if it was BS bothering William Baffin. Can't say I've ever seen a specimen of WB inflicted with any BS in more northern climates. It can be somewhat prone to Cercospora leaf spot though in cooler and wetter conditions. |
|
- Posted by professorroush 6A (My Page) on Tue, Jun 12, 12 at 15:27
| Actually, William Baffin may be a drought problem or maybe made worse by it. Mine at home looks dreadful while the K-State Rose Garden Baffin looks decent. Olga, I'm interested...in what way do you mean? Is closer to the ocean giving you more humidity and thus more fungal problems on some of these roses? Which ones are worse for you? |
|
| Yes, I think it is humidity. I didn't try that many explorers, but I do love rugosas. Morden Blush -defoliates completely from BS I also had bad BS experience with Hansa and Grootendorsts. Quadra is very clean here. |
|
| The unhappily-named rugosa 'Foxi Pavement' (Buffalo Gal) does well in a no-spray garden here. It is sharply fragrant and deep purplish pink. Fru Dagmar is good, too. |
Please Note: Only registered members are able to post messages to this forum. If you are a member, please log in. If you aren't yet a member, join now!
Return to the Roses Forum
Instructions
- You must be a registered member and logged in to post messages on our forums.
- Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review the contents and make changes.
- After posting your message, you may need to refresh the forum page in order to see it.
- It is illegal to post copyrighted material without the owner's consent.
- HTML codes are allowed in the message field only.
- No advertising is allowed in any of the forums.
- If you would like to practice posting or uploading photos, please visit our Test forum.
- If you need assistance, please Contact Us and we will be happy to help.