|
| Hello everyone,
I posted this query on the roses forum and thought I'd ask here too. I've ordered two Austrian Coppers and a Persian Yellow to plant together at the top of a hill this spring. Yes, I know they're blackspot magnets. I'd be interested to know anyone's experience in doing preventive organic spraying on these two, i.e. the baking soda and/or milk treatments. One respondent told me these treatments were only for PM, not BS. Many thanks in advance for any advice or experience you can share. Janice aka newbieroselover |
Follow-Up Postings:
|
- Posted by gardengal48 PNW zone 8 (My Page) on Tue, Jan 25, 05 at 10:25
| Gosh, I wouldn't pose questions about organic controls on the regular Rose forum - those folks are seriously into chemicals. Milk can be a deterrent to any rose fungal disease as it changes the chemical composition of surface of the foliage making it difficult for fungal spores to germinate. Same thing with the baking soda formulation. However, they are only effective if applied before any sign of the disease is evident and you repeat the applications consistantly throughout the season. Neither will be 100% effective 100% of the time. And black spot, unlike PM, has the ability to become systemic in the plant tissues if not controlled carefully in the previous season, so topical treatments in this case will only have modest results. My personal choice for organic controls of rose fungal problems is aerobically brewed compost tea. Spraying my roses monthly has been almost completely effective in controlling these problems in my garden. Both nurseries that I have been associated with as well as the test and display gardens of the Seattle Rose Society and the U of W groundskeeping staff swear by this treatment with exceptionally positive results. |
|
- Posted by newbieroselover z5a NC Mtns (My Page) on Wed, Jan 26, 05 at 7:09
| That explains the lack of response I got on the roses forum :-) I also got some helpful feedback from tne antique forum Thanks for your suggestions, GardenGal |
|
| newbieroselover, Before knocking the Rose Forum posters, I would suggest you read the responses you received, eight of them by the time you posted your last post here. The posters there were very responsive to your question and offered some helpful and sound advice including many organic approaches to your problem. gardengal, Would you please direct me to something that backs up the statement that BS is "systemic" in rose plants, such as the details of its vascular movement? Or are you are referring to the fact that BS can infect canes? If so, it would still have to be spread by spores to leaf surfaces in order to spread in subsequent growing seasons. |
|
- Posted by newbieroselover z5a NC Mtns (My Page) on Thu, Jan 27, 05 at 7:04
| Hi JAYK, no disrespect or lack of appreciation intended, just a little joke! I guess I posted my query during a lull in people checking the forum. Appreciate any and all advice I can get on these forums Thanks, Janice |
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 Organic Rose Growing 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.