floppy may night salvia
This is only my second year of gardening and it's been sort of hit or miss. I tried May Night Salvia last year and they didn't do well so I dug them up this spring and planted hyacynths in their place. But I tried five more Salvia in other locations. One is doing fairly well but they all have a rather floppy appearance. What can I do to encourage that upright position of the flowers?