Flower walls are stupid expensive for no reason! I think renting is the cheapest option, but I'm curious to know what others think as well. I'm not too much of a DIY person so I gave up on this idea rather quickly lol
Flower wall are kinda expensive, but I would still look into pricing with a rental company to see what they offer. If it's still too much maybe another idea would be hanging flowers. I looked on amazon and they are under $20 for a pack of 10. You can get them in different colors.
I tried to DIY a flower wall with cheap silk flowers. I was less than 1/4 of the way done when I gave up. For the size flower wall I wanted it was going to be over 500 dollars and it took forever to assemble less than 1/4 of the space. I am going with the look below instead.