Cement Balloon Planters
Learn to make these cement balloon planters the easy way, and that works! Use a balloon as your mold. Cement (not concrete) is the key.
**Updated April 27th, 2019**
I started this project out feeling really frustrated. Originally I tried to make these round cement balloon planters 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.
After all that, not able to let things go, I forged ahead with my research and I found a blog called MadeByBarb. She does lots of fantastic things with concrete, has tons of knowledge about it and knows which type is best to use for certain projects. –Palm slap to the forehead for the “ah ha” moment!– Cement! That was the key. Barb made these large orbs for her garden that were pretty much the same concept as the balloon planters, so I tried her recommendation of Rapid set Cement All. You can probably use any brand of rapid set cement, but the trick is, make sure it is cement, not concrete and that it sets quickly.
| Watch the detailed step by step Cement Balloon Planter video tutorial. |
When planning the size of your round planter you’ll have to consider your balloon size. Make sure the balloon package says “round”. I used round balloons that said 7. You can use bigger ones in place of the 7″ 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. Use a small mesh strainer that has hooks allowing it to sit over a bowl. This made making these so much easier. Otherwise a container like a cup or bowl that has a mouth the right size to support your balloon will also work. If you use a container, fill it with sand or stones to weigh it down so it won’t tip over while you are working on it.
As always, please ask me any questions you have about how to make these in the comments at the bottom of the page. Comments welcome.
What Not To Do:
Don’t use concrete (refer to the intro above to see what disaster ensues)
Some of the links on this page have been provided as a convenience for finding materials. The links may also be affiliate links, meaning if you purchase something, I receive a commission, at no extra cost to you. These fees help me with my costs to keep the blog running. I only recommend products I’ve used and loved, unless otherwise stated. Click here to read my full disclosure policy.
- 7″ round balloons
- Cement All, Rapid Set
- Durable nitrile gloves
- Old wire mesh strainer with hooks
- Disposable plastic mixing bowl
- Plastic grocery bag
- Disposable measuring cup
- 3 Q-Tips
- Large sponge
- Succulent soil
Note: The measuring cup and mesh strainer will get cement on them, so only use these items for crafts. In place of the mesh strainer and mixing bowl, you can use a container such as a cup but you will need to weigh it down with stones or sand. And you may want to use blue painters tape to help hold the balloon in place.
Difficulty level- Easy
Note: In this written tutorial I started applying the cement to the tied end of the balloon. In the accompanying video, I switched it to applying the cement to the non-tied end of the balloon. It really doesn’t matter which end you start with. Since I made these outside as seen in these photos, it was a little windy, which is why I needed the sifter to hold the balloon. For the video, I made these round planters inside, so the mesh strainer wasn’t necessary.
Cement Balloon Planter Tutorial Steps
Step 1 | Inflate The Balloon:
Inflate your balloon but keep in mind, the finished piece will end up being larger than the balloon because of the thickness of the cement, so make the balloon smaller than what you want your finished planter to be. The round planter size I wanted was about 6″ and I have one of those 5″ round globe light bulb covers, the common ones you see at every big box store for probably 9 bucks. So I used that for reference and blew the balloon up to be the same size as the globe. The finished planter ended up being the perfect size.
Step 2 | Set Up The Balloon:
(See pic in Step 4 for how this looks) If you are using a mesh strainer, then take a mixing bowl and cover it in a plastic grocery bag to protect it. Otherwise, use your weighed down container. Have the cup of water next to you, along with a rag for clean up.
Step 3 | Mix The Cement:
In the big disposable plastic bowl, pour in about 1/2 a cup of water. Add a little bit of cement and mix with your hands. Make sure you wear gloves! These newer gloves I found since I originally posted this tutorial are amazing and have yet to tear. They aren’t the least expensive option, but last longer so you use less of them, making them still cost effective.
Mix the cement slowly, adding more cement as you go. You will do this a few times until the cement is the consistency of cake frosting. This doesn’t have to be an exact science, just play with it. If it feels too thick when applying it to the balloon, take the cement off, put it back in the bowl and add a tiny bit of water. If it’s too thin, add cement.
Step 4 | Mould The Balloon With Cement:
Start with the tied end of the balloon facing upward. Scoop the cement onto the top balloon, but leave the tied area free of cement, this is where you will leave the opening for the plant. Leave it large enough to get your hand inside for ease of planting. If you get it too close together just push it apart.
Start molding it and work your way around, shaping and smoothing as you go. You can keep wetting the cement or your hands as you are sculpting, and also add cement to any areas that it may need to be built up.
Be careful not to let the cement touch the edge of the container or strainer or it will cause a bumpand even more importantly, if the cement pushes against the strainer, it can cause it to crack, so keep the cement free and clear of everything except the balloon. The second side will be easier, so don’t worry about trying to get the first side fully covered, a third will be good.
The cement will cure within an hour or two. Be sure to keep this out of the sun while it’s curing because the balloon may expand and pop. Keep it somewhere where the temperature won’t vary widely over this hour or two period.
Step 5 | Mould The Other Balloon End and Create Drainage Holes:
Once the first side has cured, you can flip it over and rest it on the sponge to work on the other side. The sponge will alleviate pressure while you are working on it. Continue adding cement around the 2nd half of the balloon. Pay special care to the edges where the two ends meet in the middle and smooth as best you can to give it continuity.
After you are done, carefully use a Q-tip to press a few small holes for drainage, just sort of spin the tip to create the space. You may need to wet the Q-tip to get the holes free of cement.
Step 6 | Pop The Balloon:
Let the cement dry, you can just let it rest on the sponge, or in the strainer. It should take about 1-2 hours depending on climate conditions, then you can pop your balloon. If you wait too long to pop it, the balloon may be more difficult to pull out and could stick to the cement. To pop it, just use scissors and snip the spot where it’s tied, then pull the balloon out of the cement planter.
Step 7 | Reinforce The Cement Balloon Planter:
You should reinforce the balloon by adding more cement inside. Mix up some more cement and pour it into the sphere, make sure to keep your drainage holes clear, use the Q-tips again if you need to. I made mine about 1/4-1/2″ thick on the bottom, then built up the sides just a bit. Your planter may be durable enough without this step, but better safe than sorry.
Final Step | Plant Your New Cement Balloon Planter:
Add soil and then your plants! What types of plants will you use? Succulents?