For a column you can use the same guidelines as for a spiral arch. With balloon clusters of four, you will need 12 x 5 inch balloons per foot. That makes 72 balloons. Add a few in to cover for balloons bursting.
Good luck with your balloon column.
And as always, we would love to see a photo of your balloon decoration (it does not have to be from a wedding, pictures from birthday parties or other events are welcome too).
If you make a purchase through a link on my site, I may receive a small commission at no extra cost to you. I only recommend products that I believe to have good value (affiliate disclosure).
Can you please tell me how low and high temperature, humidity, pressure, sun and other atmosphere factors affect balloons inflated with air and balloons
I need to send balloons out of the United States for a sweet 16 celebration in another country where they don't have access to helium... What kind of balloons