When to trim back knockout roses and how much!!
This is my third year summer with my pink and red knockouts and last year I liked them to stay as tall as the photo I have included here. The problem was by August they too tall and hate to cut them back as they were in full bloom in August and did not want to cut any flowers off at that point. Should I cut them harder in the spring and how low to the ground so they don't get any higher then the ones in the photo? Does anyone fertalize theirs in the spring as I did not last year and they stopped blooming the month of July then bloomed again all August.. Would feeding them make them bloom all summer not take a break in between??
Here is a link that might be useful: