14 LONGEST Blooming Perennials That Bloom Until Frost (Trial Garden Picks)
One perennial in my garden has flowered for the last six straight months. Same plant. Same crown. From April to October - without me doing anything to it. That plant is at number two on this list.
The plant at number one is even better, but for a different reason. It has been on the market for over thirty years and nothing the breeders have introduced since has replaced it. Not in the catalog. Not in the trial garden. Not in your grandmother's yard.
These are the fourteen longest-blooming perennials in American gardening - the ones the trial gardens have been quietly endorsing for decades, while the catalogs were busy selling you the next short-lived hybrid.
Most of them you have walked past at the garden center without giving them a second look.
Sources referenced:
Perennial Plant Association - Plant of the Year program (1992, 1997, 1999, 2007, 2008 winners cited)
American Hemerocallis Society - Stout Silver Medal recipient list
Mt. Cuba Center - pollinator performance trials (referenced)
Allan Armitage - University of Georgia Department of Horticulture („cheap petunia of perennials" quote on Coreopsis 'Moonbeam')
Heinz Klose - German breeder, 'Coronation Gold' Yarrow ~1953
Drop a comment with the longest-blooming perennial in YOUR garden and how many years it has been there. The old long-bloomers have the best stories. I read every single comment.
Subscribe before you leave. The next video is the 3rd regret list nobody is talking about - invasive groundcovers most American gardeners inherited and cannot remove.
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