Which plants have disappointed you the most?

Which plants have disappointed you the most?

I think every gardener has tried at least one plant (new or old) that greatly disappointed them. There are three plants I haven't cared for: Hydrangeas Pinkie Winkie, and Quick Fire haven't done diddly for me but hydrangea Limelight which I planted right next to them performed admirably last summer. Another plant I couldn't care less about, is Korean Viburnum "Aurora". The leaves are fuzzy and rather weedy looking and the small blooms are sweet smelling in a nondescript sort of way. I hate to say it, but they kind of remind me a little of babypowder for the two weeks out of the year they are present. So which plants have disappointed you?
uh oh…

uh oh…

Color for our new place

Color for our new place

plant/tree and beetle ID

plant/tree and beetle ID

pointe shoe

pointe shoe

Pests!

Pests!

Spanish Lavender and grass choked roses in California

Spanish Lavender and grass choked roses in California