fertilized my roses
I just fertilized my roses. How long should I wait to apply Epsom salt water? I have knockout roses that are not doing well this year (had them for 4 years).
Certified GKH Gardening Expert
I sprinkle 1/2 cup of Epsom Salts around the base of the rosebushes and work it into the soils a bit. Then water in well. This can be done the next day if desired, same goes for the Epsom Salts water application.