The Dearthbox: A low-cost, self-watering planter

The Dearthbox: A low-cost, self-watering planter
Joining many other excellent earthbox instructables, meet ours, the Dearthbox! The Dearthbox costs about $13-16 per box, and can grow up to three plants, depending on the type of plant. At our house in CA, we've been testing these out for the last month or so. Our tomatoes are thriving and it's a relief to know our plants aren't parched in the afternoon heat.

Even if you've already planted stuff, you could still transplant to the Dearthbox and save some water this summer.

This instructable shows you the materials we used, the steps we followed, and how to plant a fairly big plant, as well as how to plant seedlings.
 
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Step 1Gather your materials

Gather your materials
If you already own most of the cutting tools and the drill, this instructable costs about $13-15. We got everything at Home Depot, but you can find similar stuff at any hardware store.

Materials pictured:

2 big paint buckets that stack (~5 gallons each)
1 lid
1 plastic tub OR drain grate (The height of the tub/drain grate should be approximately the same height as the gap between the two buckets when stacked)
1 2' long 1" diameter plastic pipe (make sure it is longer than the height of the buckets when stacked)*
1 mesh baggie (find them as packaging for fruit, veggies, other stuff!)

Tools pictured:

drill with 1 inch bit and 1/4" masonry bit
utility knife with extra blades
rounded file
saw
permanent marker
tarp (collects all the plastic bits!)

Not pictured:

black plastic garbage bags
seedlings or established plants
potting mix
compost
fertilizer

*I've read different things about using PVC after making this first version, which does use PVC. This project is made entirely of plastic, so if plastics in general bother you, you probably should not make this. If PVC specifically bothers you, it's easy to find other plastic pipes that will work, just poke around the garden supply store. Also, Greenpeace has a big database of alternatives. What do you think about PVC? What alternatives have you discovered?
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45 comments
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Jul 9, 2011. 5:50 PMinalak says:
Another good thing to use instead of the mesh from the garlic is a paint strainer bag from a hardware store. They are only around a buck each have a finer mesh so I think less soil will be able to get through. The small paint strainer is about the size of a small can of paint. My girlfriend and I have been using the 5 gallon size to cover our basil as we've had an onslaught of leafminers. Obviously the 5 gallon size is a little more expensive but only by about a buck more. Great work on this btw. Much mahalo for this instructable
May 28, 2011. 6:05 AMmeng1969 says:
It's so fascinating! I want to practice. vegetables, plants are my favorite.
Jan 12, 2011. 2:56 AMmguer133 says:
Great instructable, I'm thinking of doing the same with large 80L dustbins.
It qhould allow to grow patatoes, carrots etc.
Thanks!
Apr 24, 2010. 6:08 AMirishman44 says:
Great instructable!  I was wondering how many pants can you grow in one?
Mar 27, 2010. 2:37 PMmerideth says:
it's not a masonry bit it's a spade bit...worked great for me...fantastic project!
Feb 21, 2010. 8:00 AMkamalbj says:
Have you seen this cool idea? It looks very similiar to this instructable, in fact form the parts list etc I'm wondering which idea came first?

earthtainer.tomatofest.com/
Oct 14, 2009. 9:15 AMroberto1988 says:
Hi, what drainage holes on the sides.
Feb 14, 2010. 4:16 PMolddirtyspatula says:
this is amazing. I'm a first time gardener and had all-around success with green beans, peas, chives, peppers, and carrots. I stopped watering these a few months ago and was just explaining how they work to my neighbor and I pulled out a carrot the size of a wine bottle.
carrot.jpg
Sep 28, 2009. 2:16 AMallanspear says:
I built 3 of these and planted tomatoes. It was real easy and fun. Looking forward to the "fruits of my labour". Great Instructable, thanks.
Sep 26, 2009. 1:25 PMtkmarispini says:
Great idea. I gave it a try and planted a cotton plant in it. I also planted another cotton plant in a regular pot directly next to it as a control. The bucket lagged behind for about a week or two then surpassed the regular planted cotton plant. Awesome results - Can't wait to make another. Thanks again.
Sep 20, 2009. 5:25 PMallanspear says:
Great idea! I will definitely be using it!
Aug 11, 2009. 10:43 AMsail4free says:
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Another way to protect your recycled plastic buckets from UV exposure is to paint them (outside only). Unfortunately, you may have to use a good oil-base floor enamel to find something that will STICK to the plastic (latex paint peels off way too easy). This concern about the UV breaking the plastic down is actually how I got started building my containers from wood and lining them with black plastic.
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You could also build a round (or square) box to enclose the bucket and shade it from the sun . . . looks better too. We use this approach to build outdoor ashtrays for our commercial buildings and simply fill the buckets mostly full with sand.
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sail4free
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Aug 11, 2009. 10:37 AMsail4free says:
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I agree with Mr. Beefhead -- potting MIX (not soil) works best. If you're inclined to make your own, it's about 40% peat moss, 20% perlite, and 20% compost. Some tomato growers (like Ray Newstead) think it runs a little wet; feel free to experiment. I use the 2.5 cubic foot bags of Miracle Gro = h-e-a-v-y . . . bring a helper.
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Taking my cue from wicking boxes, I think we're wasting a lot of buckets (and time drilling holes) when ONE bucket will work just fine. I'll do an instructable on this and link to it soon. For now, you can scope out two wooden versions of "EarthTainers" which I built here:
http://www.instructables.com/id/How-to-Build-Your-Own-Growing-Containers/

Feel free to leave any constructive comments.
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sail4free
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Aug 11, 2009. 7:31 AMhowdotheydothat says:
I love this! I grow tons of plants from cuttings and seeds in my backyard. Because I grow so many plants, I try to be very frugal when it comes to the containers I use, such as using small plastic trash cans from the 99 cent stores and empty plastic laundry soap buckets. The downside of this I have learned is that plastic containers not made specifically to be left out in the sun will become sun rot, get very brittle and will disintegrate. To keep this from happening you have to block the sunlight from getting to the plastic. Such as wrapping the bucket with foil.
Aug 6, 2009. 5:35 AMjeff-o says:
An even better bit to use is a "hole saw" which will drill holes 2" in diameter and beyond... expensive, though.
Aug 6, 2009. 5:33 AMjeff-o says:
An alternative to PVC is ABS pipe.
Jul 29, 2009. 11:23 PMj-orr says:
I am experimenting with this method this year. Next season, if all goes well, I will employ enough self-watering buckets for a full crop of tomatoes, peppers or other fruits or vegetables. I think I can get a few used 5 gallon buckets from a fast food place.

I am using information posted on the Global Buckets website as a guide also. There is more information on growing media and watering systems for a rooftop garden. All of your visitors can get a lot out of these self-watering buckets. I'll post photos of my results on my profile later on.

URL: http://www.globalbuckets.org/
Jul 9, 2009. 3:46 PMannekaelber says:
In my Arizona household, we have 2 disabled adults (out of 3) and 10 ferrets (yes, ten!). We've wanted to grow tomatoes and potatoes indoors but have been seeking a way/place to grow them safely, so the ferrets cannot reach the nightshade leaves (poisonous!). This is the first Instructable I've seen which might meet all the qualifications our household requires (we're demanding, I know!). Thank you for sharing this one. I'll report back if we actually get these up and running! Anne.
Jul 9, 2009. 11:26 AMjcurme says:
Plastic cat litter buckets should work too. They are square and a bit smaller.
Jul 5, 2009. 5:35 PMhzleyes47 says:
This is so cool and it seems to be easy to put together. I like it !!!
Jul 5, 2009. 11:19 AMcrockl says:
I built one last weekend to transplant some cucumber plants. They are doing great! Thanks for the great post!
Jun 27, 2009. 5:22 AMgemgh says:
Love the article. I can use this year round in the house if I want as long as it is close to a sunshiny spot. Thanks for taking the time to post such wonderful information.
Jun 22, 2009. 9:26 AMthepelton says:
This really would have been nice to find in early April when it was prime time to start growing things, instead of early summer.
Jun 20, 2009. 3:16 PMthepelton says:
How can I get free potting soil? I live on the second floor and have a balcony with plastic planks, so there isn't any dirt up there.
Jun 21, 2009. 5:59 AMMr. Beefhead says:
I don't know if anyone else has any experience with alternatives, but in my personal experience you MUST use potting MIX (not soil) for the wicking action to work properly. Using soil results in either dry soil or root rot. I think that potting mix is mostly peat and pearlite, so it's not likely that you'll be finding any for free. Around me it seems to cost about $12 - $14 for a 2 cubic foot bag, which would probably almost fill three of these buckets.
Jun 22, 2009. 9:28 AMthepelton says:
You might also get weed seeds in common soil.
Jun 22, 2009. 9:27 AMthepelton says:
Thanks.
Jun 22, 2009. 12:35 AMtrf says:
Just a little hint...instead of using the the utility blade...they make this thing called a hole saw.http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100495351&N=10000003+90401
they work on a range of things from metal to wood to plastic..its pretty much universal...i used 1 and cut thru about 1/4 of cast iron with no dulling to the bit
Jun 24, 2009. 11:21 AMthepelton says:
They are available at a number of Lumber Stores and Tool Stores. Just be sure and get the ones that are not cheap sheet metal. The first rule to learn about buying tools is YOU GET WHAT YOU PAY FOR. Spend a little extra up front and it won't fall apart in mid-job.
Jun 22, 2009. 9:20 AMthepelton says:
I know. I have a whole array of them from 5/8 in to 3 in.
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