why it only really reach 8 ft long?
I am in Illinois. I grew hyacinth bean vine on an 18 inch diameter pot with a 12 inch deep of garden medium. The pots were by the pergola posts. each pot had 3 plants.
It didn't reach the top of my pergola. Will this vine grow only this long in Illinois? 2 years ago, I planted moonflower and the length was also 8-10 and not even thick.
What am I doing wrong? I want to try it again this year.