"...a gardener who knows his flowers and is ignorant of his weeds is like half a coin, a tail without a head." Sara B. Stein
Well if so when the hell is it going to bloom? It's five feet tall with nary a bloom in sight. I hope you're right. This year I won't yank it out of the ground in frustration.
Could it be a joe pye weed? They get tall and bloom late.
I think your plant is a mexican petunia that needs lots of sun - it flowers are purple.
I'm pretty sure it's not Joe Pye weed. Got lots of that in the park next door and it's smaller and already blooming. And I can't honestly say it looks like the pictures I found online of a Mexican petunia. The plant is now about 6 feet tall and no blooms yet. Don't all plants have some flowers or buds eventually?? Maybe not.
Wait!! I think Theora might be right. I was mixing up milkweed with joe pye weed. My apologies for doubting your guess. I should know for sure in the next month or so.
I don't know, but I'm mighty curious!