Honestly, it's more like Perennials I've Given Up On and Ripped Out. That's because I hadn't yet learned this little ditty about them: "First year sleep, second year creep, third year leap." Unfortunately, it's true and really bad news for impatient gardeners like myself. So truth to tell, I've given up on plenty of perennials before giving them enough time to show me their stuff. Others have honestly underperformed for me:
- Monarda up and died after 3 years.
- Euphorbia 'Martinii' - they're dying one by one.
- Foxglove - famously short-lived in much of the U.S.
- Geranium 'Johnson's Blue,' which seem to do well for everyone else, so it's an unsolved mystery.
- Stipa tenissma - a gorgeous short ornamental grass that I had high hopes for.
- Artemesia 'Powis Castle' and others. They hate humidity.
- Plants I started from seed which never had much impact in the garden: Campanula carpatica, Veronica spicata and Catananche carentea and Linum perene (Blue flax).
Photo: the Euphorbia x Martinii that dazzles, until it up and dies.