When and how to cut back petunias
My petunias in my window boxes look dreadful at this time of the year. I am always unsure and afraid to cut them back earlier in the year. I pinch out the spent blooms but end up with a long stalk with one flower on the top. I have tried to experiment with cutting them back gingerly to see what happens but this year it hasn't helped much. What do others do? I think I am going with something different in the window boxes next year!