Among my great $1 rescues is this Orange Clockvine (Thunbergia gregorii) I got from a nursery going out of business as a scraggly stick in a 1 gallon pot.
I planted it at the corner of the duck pen hoping the fencing might give it some support to grow on.
Twenty years later it’s consumed the entire pen, top to bottom, side to side over the whole 10 foot by 15 foot pen. Every spring it starts to bloom and doesn’t stop until the first winter freeze. Sometimes it’s covered so densely in orange flowers that it literally shows up on satellite images.
A great $1 investment.