I started this project out feeling really frustrated. Originally I tried to make these using concrete like other tutorials show, but it was a complete fiasco. Even though I sifted the concrete to get out the gravel, it just didn’t work. I must have popped 5 or 6 balloons in the process.
I also was working outside and accidentally polluted the environment with 4 runaway balloons I was never able to catch- it was really windy that day.
Aargh, I watched a million videos and read tutorials of people making these with concrete and I’m feeling like they have to be faked a bit, because it just doesn’t work.
Cement! It turns out that cement was the key.
When planning the size of your planter you’ll have to consider your balloon size. Make sure the balloon package says “round”. I used round balloons that said 5”. You can use bigger ones in place of the 5″and just blow them up with less air to be smaller, but be careful because they may end up being more oval than round.
Make sure to have everything set up and ready to go because once you start mixing the cement, you won’t have much working time.