I'm a retired nurse and finally have my first rose garden here on the coast of NC> I read all I can, however we have problems with disease in this humid area. I have several shrub roses, Tamara, Nearly Wild, and some climbers, Blaze of Glory, Social Climber and Joseph's Coat. I need advice on a good systemic treatment for Black Spot, having removed diseased canes and leaves. The general fungicide I've used doesn't do it. Love any advice. Gardengater
I posted a few down from your post seeking advice from people in similar climates ..... A good thing to do is buy roses which are suited to your area. Problem is that kind of info is not always out there or accurate. Plus there are other factors What colors do you like? Any certain kind of rose? Keep them healthy and feed them without over doing it and that helps them put up a good fight being healthy do you use compost as fertilizer? Do you water to leaves on the roses and the whole plant in general? Will wilt them here in the sun and give them disease. For some reason I have two roses that seem to do horrible for me Jubilation and Queen Elizabeth I have built a sort of small greenhouse for the queen e to see if less sun helps. I am no pro i mostly let it grow
I grow mostly heirlooms an rarely do I treat them with anything other than compost. Once a year in the spring I may need to spray a rose with something to control thrips. I don't do well with hybrids. I'm not real sure what to tell you other than check out your local farm supply for what your wanting to do. In the spring time I have used Daconil for my fruit trees an if I had any left over I would use it on whatever roses looked like they could use a boost just to empty out the container. I do get BS even on the oldies, but the beauty of it is if left alone the new leaves will push the bad ones off. It just all depends on how you want to go about things. I choose not to spray any more than absolutely necessary. It does help not to spray the foliage when watering, esp. in the evening but nothing you can do when it rains other than staying on top of a spraying routine if thats what you choose to do. And keep the area cleaned up of any diseased leaves/canes will help. I have just shook the bush to remove the bad leaves. I have also sprayed the bushes with a kinda strong spray of water early in the morning to knock them off. The bush will have plenty of time to dry before dark. This is just the way I handle my roses an this method may not be for u.
Black Spot on your Roses Try milk. If you have a heavy infestation you will want to go almost full strength. I used it on some fungus on my squash and it worked. Use a spray bottle and 9 parts milk to 1 part water. Every 3-5 days for a while. If you remove any diseased material be sure and properly dispose of it. Do not put on your compost pile.
Rose disease Thank you all for your advice. I will go the spray route for a while, but none of my plants have died so far. I do water from the bottom and pick off affected leaves. I just want healthy bushes and blooms. My Knockouts are my salvation. I hope more varieties come out eventually. It's great to have you all to share my problems and triumphs with. gardengater
If you really like the knock outs, then you'd also like most any of the "Buck" roses. They are all suppose to be easy an disease resistant.
GG, try Bayer All in One Systematic rose food. I get mine at WalMart, but I know Home Depot also carries it. It works like a charm, no spraying, it is fed through the roots, just mix and water. If it works in Louisiana, it should do good for you.
