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Do you ever happen upon some piece of junk and think, "that is so cool, I just have to have that in my life"? I sure do. So when I was at my friend's lab at Caltech and he showed me this giant aluminum macaroni-like tube that they were getting rid of, I knew I had to have it. But what to do with it? I decided, after it sat around in my apartment for a while, to make it into a planter. This instructable is particularly geared to my particular piece of junk, but the method should work for anything.

This planter also has a vertical feature. I did not just want to leave that end covered up, so I fashioned a way to plant some sedums on the vertical face of the planter.

If you don't know folks who work in a science lab at a university, you might not come across suitable pieces. If you live near a university, however, you can always swing by the garbage outside of physics, chemistry, or engineering labs once in a while; often you can find some quality junk waiting to be thrown out.

Step 1: Find Some Junk

The first step, clearly, is to find some suitable junk. Mainly, you want something that could stand up in some way and that has a cavity in which you could fit some plants, soil, and rocks.

My junk was formerly part of a plasma generating ring, seen here. This is a nice shape because you could place it in a number of ways: as seen in the picture, or on its rounded side, in which case you'd leave the rectangular plate on top and have plants growing out of the two circular ends.

What else you'll need:
Enough rocks - the amount of rocks needed depends on your planter size
Enough dirt - the amount and type of dirt depends on both your planter size and your plants' preferences
Some plants - enough to fill the space
Wire mesh - some fine mesh (window-screen mesh) and wider, stiffer mesh
If you have a vertical hole, you will need some kind of clamps or glue
Planter base
Caulk

Step 2: Add the Rocks

There are a couple of reasons you want to add rocks to the bottom.

1. Most importantly, the addition of rocks at the bottom will help with drainage. If there was dirt all the way down, it would easier for the soil to become waterlogged, especially since there are not holes at the bottom of this vessel to allow excess water to escape.

2. The plasma planter is slightly unstable standing on its end, especially once we install the plants and dirt, so having heavy rocks at the bottom are a good way to weigh down that end.

3. Rocks are usually cheaper than dirt, so the more rocks you use, the less soil you have to use.

I filled the vessel most of the way up to the top of the bottom curve with rocks. This was one bag of rocks from my local garden store, but you could probably just find some rocks or boulders around in nature. Unfortunately, nature does exist in Los Angeles, just garden stores.

Before adding the rocks, you want to place the planter on a base and seal it with caulk. This may not be crucial in all projects, but is especially important if your planter is unstable and may need some help staying in place.

Step 3: Add the Soil and the Plants to the Top

After you've put in sufficient rocks, add plenty of dirt. It will probably settle over time and with watering, and it will be difficult to refill, so add slightly more than you think you will need. You can always remove some if you can't fit the plants.

Next, you can add the plants at the top. I put in a mesh wall inside the tube to help separate the tube into two spaces. This both helps stabilize the dirt and allows for me to be able to remove the vertical feature if it dies (which is more likely, since it's slightly more difficult to water).

Step 4: Add the Vertical Feature

This is the hard part. Or, I guess it's more the messy part. It is a nontrivial exercise to put the dirt in the front, but there's no good advice I can give here. Just do it. Another good idea would be to line the bottom of the dirt as well has half of the mesh with a plastic bag. Weigh the plastic bag down with some dirt and hold up the rest of the bag. That helps keep the water in when you water the front, and also aids in adding the dirt.

You should have, at this point, cut a rectangular hole into the mesh pieces that will be the portal for the plants of the vertical feature to come through. The final step is to put the plants into the tube before you put the mesh in place, and then thread the leaves/body of the plants through the hole so that the roots are held in by the mesh, but the plant bodies are growing out. I chose sedums because they should cascade down as they grow, but in retrospect, parrots beaks would be an even better and more beautiful choice.

Place your planter someplace sunny, and enjoy!

Wow, that is the COOLEST piece of science junk EVER! No wonder you had to have it! Nice work with making it a planter, too. Since my son is at &quot;the other Cal Tech&quot; (Rose Hulman), I'll ask him to keep an eye open for fabulous science junk.<br><br>Thanks for the great idea!!
Pretty neat. It is nice the way the sedums come out the front. I really like succulents, what is the name of the one with the reddish leaves?
I like succulents as well, but I have no idea what the one with reddish leaves is called. Also, sadly, the leaves have turned mainly green. I think in order to keep them red they need certain conditions of heat or light that I just don't have. They are still slightly reddish at the tips, but much less beautiful.
Please post follow up pics. This is great!
wow, this is really great, and very awesome looking. Looks like you pulled it from some strange alien land especially because of the plants you chose. I'll probably never find anything as cool as that metal tube, but I'll be keeping my eye out now. Fo' Sure.

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Bio: Unsurprisingly, I like to make stuff.
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