Answer: Most perennials do not bloom over such a long time period, but rather for several weeks. In addition, most really need to be started a year ahead of time to bloom int he quantity and quality you might expect. If you are able to start them very early in a greenhouse for example then you might try the following, "Foxy" foxglove (more a biennial performer but will bloom first year), lance leaf coreopisis, purple coneflower, gaillardia, and perennial sweet pea. Occasionally some strains of hollyhock and verbascum can also bloom the first year.
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