As always, I appreciate and learn from your posts! I'm here in Rockport, Massachusetts where we have received a lot of rain this spring and thus the blackspot is already showing up. Due to winds, there are quite a few diseased leaves on the ground. I am not happy to see this since my roses are bursting with blooms just starting to open. In addition to removing what leaves I can, should I try garlic spray? Do I purchase such a spray or make my own? Thank you, Karen
Yes give garlic spray. I would recommend using a commercial product (there’s several if you look them up on amazon), as they will have the dosage just right. Spray it once a month on both the leaves and stems and it should control the outbreak.
As always, I appreciate and learn from your posts! I'm here in Rockport, Massachusetts where we have received a lot of rain this spring and thus the blackspot is already showing up. Due to winds, there are quite a few diseased leaves on the ground. I am not happy to see this since my roses are bursting with blooms just starting to open. In addition to removing what leaves I can, should I try garlic spray? Do I purchase such a spray or make my own? Thank you, Karen
Yes give garlic spray. I would recommend using a commercial product (there’s several if you look them up on amazon), as they will have the dosage just right. Spray it once a month on both the leaves and stems and it should control the outbreak.
I will definitely give it a try because I’ve never heard of garlic spray to control a black spot. It’s usually some chemical like Mancozeb