I found black spot of the bottom leaves of a new David Austin rose I planted in the Spring. I need some advice

I hate to use chemicals on my lawn, I keep things very organic. I'll tell you what I've done so far and if you could please give me additional advice I would be most greatful!!! I trimmed off any spotted leaves from the stem of the plant. I've checked the stem for any sign of disease and there does not appear to be any. I've cleaned the soil of any fallen leaves. This plant is new, planted rootstock this Spring. The area I planted in had never had roses before. This was the first addition to a rose garden I was just beginning, starting with a rose named Mary Rose which happens to be my recently deceased mom so I really want to keep the plant. PLEASE give me your best advice.

I found black spot of the bottom leaves of a new David Austin rose I planted in the Spring. I need some advice
This is what I use on my roses when they get black spot. purchase 2 32oz spray bottles.





Bottle one:


1Tbs Apple Cider Vinegar


1/4 tsp dish soap


1/4 tsp lite cooking oil (canola)


Water





Bottle two:


1Tbs Baking Soda


1/4 dish soap


1/4 cooking oil


Water





Spray your plants once a week with these solutions but not on the same day. Put a few days in between each solution. For example: spray one on Sundays and the other on Wednesdays. Make sure you spray top and bottoms of leaves, canes, and trunk. Also, make sure you spray early in the morning because it will cause sun burn. Clean up any debris around the rose. Throw the debris away (do not compost) and remulch. I live in OK and we had a monsoon for spring and early summer. Quite a few of my roses developed black spot and I started using these solutions as soon as I could. It did not take long for me to notice a halt to the black spot and now my roses look perfect. It even worked for my Hybrid Tea and they are hard to treat for black spot. Given that it is a David Austin, you shouldn't have any problem curing it.


Good Luck
Reply:baking soda dissolved in water and sprayed on the leaves is supposed to help black spot. Keep all affected leaves pruned off (destroy them) and don't allow them to lay on the dirt to infest it with the disease.





Organic is nice, but not practical for black spot. I use 3-in-1 spray.





good luck
Reply:You are probably watering them too much.
Reply:Blackspot is a disease. Austins claim that their roses are resistant, so it is unusual for them to get it. A suphur spray should work. sulphur is as natural as anything else, although I am sure pure organic people would/may object. Growing garlic/other aliums beneath the roses my help. Reducing stress on the plant is important. correct watering and feeding will keep the plant in optimum health. Dig plenty of organic matter into the soil to help retain moisture. this will help reduce the risk of mildew aswell. Black spot tends to look bad, but except in unusual cases is not fatal. Hope this helps to reassure you. Mike