Short and long lived perennials
I have a question about the short/long lived perennials. I have in my garden daylilies, Baby's breath, roses, salvias, phlox, sage, oenothera, evening primrose, rose-colored dianthus, silver mound and anise hyssop. I haven't been gardening long and was so discouraged to find out some perennials may not live very long and I may have to replace them this year. This, after searching so long and finding plants that bloomed good and came back, this is disheartening. Are mine short of long lived?