If your rose bush looks like this, this is due to your mistake. In this article, I will point out why your rose bush leaves are having black and brown spots. You will find some tips to overcome this issue.
Just look at the picture at the top of this article.
What I can see is:
- Some brown spots along with black spots.
- Yellow leaves.
These two are clear signs of a combination of increased humidity and overwatering.
Due to underwatering, your rose may show yellow leaves, but if you are witnessing black spots along with those yellowing leaves, it must be due to high humidity/watering/congestion.
How to treat the black spots on rose leaves
Yes, overwatering should be avoided. But what is more important than that is: when watering, try not to get the leaves wet, especially if you are watering during the day/morning.
Water ground only. Rain is okay because it has oxygen.
Only water the base of the plant in the morning. Make sure she gets at least 6 hours of sun, remove those leaves, and throw them away.
This is my Peggy Martin rose plant.
I didn’t get enough time to take care of this, and I planted it in a crowded spot with other plants. This was my mistake.
The best you can do to get rid of black spots on rose leaves is: you can remove the infected leaves and spray with a fungicide such as Bonide Infuse. Black spot is especially bad after all the rain.
The black spot fungus on rose leaves is mostly seen after rain. (Especially rain in the springtime)
You can trim some of the branches to increase the airflow in between the stems and leaves.
If you are planning a regular pruning, check this chart: when to cut back or trim plants - Chart
Black patches on rose leaves
I would recommend you: Another add to dirt doc, 50% water-50% 3% hydrogen peroxide 1 x only. Spray/ misting bottle, depending on plant size.
Foliage misting, not a soil drench. The 3-in-1 is granular or liquid, which is watered into the soil according to the bottle directions.
Black spot disease on roses is something we are prone to this time of year (spring) due to all the moisture.
Check if you have enough airflow to help the moisture dry out a bit.
I always start pruning my roses down to about 2-3 feet in height in December or January or so. I would hack them down, treat them with the fungicide again, and let them go dormant until the frost is past. The new growth in spring should be healthier.
I hope this helps. Subscribe to my site to help me keep writing for you.
