It depends. If the lifting capacity of the helium filled balloon is greater than the weight of the tulle, ribbon and potential other decorative elements, then yes, it will float.
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).
Is it better to use air filled balloons than helium for outdoor decor? ANSWER: Yes, absolutely. Helium is very susceptible to temperature fluctuations.