It looks like I have blackspot on my yellow minature rose bush so I purchased Bayer advanced..rose and flower care product. On the front label it reads 3 systemic products in one..My husband made one batch up(1 qt.)yesterday and poured it around the base of the rose bush. We had almost an inch of rain since last night about 5:30 pm. This morning about 6 am, it was really raining hard, now it has stopped, but supposed to rain more. We really do need the rain though so I'm not complaining.
What commercial product for blackspot and mildew have you found successful for you? Or a home remedy? Example:baking soda, water, dish soap or light vegetable oil
Can I apply the baking soda solution on the foliage after the rain stops or should I wait for another day when it's sunny and the foliage is dry to apply? Another remedy mentioned somewhere was a cornmeal mixture.
Curious to know what you have found to be the most effective for you? How often do you apply it?
