Self Watering Plant Container out of a 2 liter bottle

Step 4Add the wick, the potting mix, and your plant

Add the wick, the potting mix, and your plant
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Once the final coat of paint has dried, it's time to put it all together.

Note - the top piece of the 2 liter is the planting container, the bottom piece is the water reservoir .

The wick is a scrap of cotton t-shirt, about 8" x 8". Anything close or kinda that size will do. Take one end of the wick and push it though the neck of top piece, so half is sticking out the bottom and half is inside. Wet that down to start the wicking action.

Now it's time to add the potting mix. Take a scoop and put it in the bottom of the planting container. Pull the wick up so it's surrounded by the potting mix. Tap that down and put on a little water to make the potting mix moist.

Add more or less as much potting mix as you need for putting in your plant. I'm transferring in a little thing of cilantro but if you are doing seeds, fill it up to the top. At this point it's just like re-potting any plant. Put in the plant, add extra potting mix to fill the sides, tap it down and water to make it moist.

When that is all done, take a look at where the neck is at the bottom of the planting container. You want to have the fill line about half way up the neck - where the water is only in contact with the wick and not the potting mix. Mark your fill line with the sharpie, pull the planting container up and fill the water reservoir to the fill line just marked. At this point, you are done!

The nice thing about this system is it gives the plant roots a constant level of moisture, it's not flood and then dry, flood and dry like normal watering. Check the fill line every few days to see where you are. The most I've had to refill in hot sun with a thirsty plant is every other day or so.

I've done this with one, two and three liter bottles and they all work. It's a nice and quick way to make a planter that will give your plants a fighting chance with a forgetful waterer.


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9 comments
Jan 20, 2012. 5:06 AMlexkeepsitsimple says:
I definitely want to do this, thank you!
Sep 8, 2010. 5:26 AMnana13 says:
love this idea! thank you for sharing God Bless you in al that you do!
May 29, 2008. 3:52 PMgwtgator says:
would you water through the soil, or separate the halves and fill the bottom reservoir every time ?
Mar 25, 2009. 10:18 AMdulany1977 says:
It would most likely be best to add water to bottom so that you do not flood seed or drown the root systems. having the wick will pull water up, but also if adding water from the top it would keep water in as well and make the roots too wet and apt to root rot. ;)
Sep 1, 2010. 5:38 PMuribouwawa says:
I wonder if you could add a hole above the water line but below the top section so you could just fill it with a watering can rather than having to take the top part off--there probably wouldn't be too much of an evaporation difference, would there?
Dec 5, 2009. 9:56 AMcdparks says:
 Great idea! one [unrelated] question:  where did you get the free-form green container in the right foreground of the last picture?

Thanks for sharing your talents!
Dec 7, 2009. 4:30 PMAubreeMarie says:
I've seen those types of planters at "The Christmas Tree Shoppe", we have 'em everywhere in New England, so I'm not sure if you have them in your area. I have seen and purchased these types of containers (a pack of three stackable with hanging chain) for the past two or three springs.
Apr 3, 2009. 2:14 PMbegusquiza says:
Este proyecto es muy bueno! gracias por compartir tus experiencias.
Nov 7, 2007. 8:36 PMjenables says:
This is so cool! I'm going to try it as a project with kids in a rec program!
Jul 11, 2007. 7:20 PMbourgeot says:
Very Clever. I would like to try this because I drink a lot of soda in two-liter bottles, I'd like to have an herb garden, I have lots of old tee-shirts, and I don't do very well with on-schedule watering. This looks like something I might not fail at! Thanks.

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Author:whamodyne
One man's puttering about doing stuff and making things