perennials that masquerade as annuals...
Here are a few perennials I have tried and they never did over-winter here in zone 5, even though touted to do so - or they came back but never thrived thereafter.
Do you all have any perenials that were complete failures for you?
some ornamental grasses
I am sure there may be more.
I am thinking that the soil I have is very heavy (black) and the drainage can be an issue. Although some plants do very well in it. I just need to find which ones.