Rose care
Post date: May 19, 2020 12:17:39 AM
Lavanya Jagadesan
Rosette or RRD has no cure. Remove the affected rose/roses and garbage them. Make sure to sanitize the shovel etc.
For black spot
2 methods
1 tsp neem oil + 2 tsp dish or Castile soap + 1 gallon water. Remove the folliage with black spots and Spray the plant generously after sundown.
Method 2
Milk milk and water 1:2 ratio and spray after sundown.
I am currently doing this for my Neil diamond rose bush.
Both treatments can be alternated weekly until the black spot is gone. Reapply one of the methods after rain.