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30 Gallon
SIP Tote:

Creating a Sub-irrigated
Tote Garden Planter:

The AlboPepper self-watering 30 gallon tote SIP is an excellent way to use sub-irrigated planters in your urban garden. I'm sharing this design which I adapted to suit my needs. I would say that 90% of the idea has been out there on the internet for years. This is a refined method that I've tested and had great success with. It's easier and faster to construct than other techniques which is a real plus!

CAPACITY:
Estimated: 25 gallons of potting mix.
Reservoir: 3 gallons of water.

Self-Watering 30 Gallon Sub-Irrigated Planter Design
Once you understand the basics of a DIY sub-irrigation system, you can design your own SIP! pin it

THE SELF-WATERING TOTE ADVANTAGE: Growing your annual garden vegetables in SIP totes is a much more resilient form of container gardening. Drought management is easier on two fronts: 1) Reduced water runoff. 2) Easier manual watering.

REDUCED WATER RUNOFF: Watering your totes a little every day allows you to keep track of your vegetable health. At the same time you don't actually HAVE to fill the water reservoir until it overflows. Watering in this fashion means ZERO runoff. And when it rains, much of that natural precipitation will be trapped in the partially filled reservoir before finally reaching the point of overflow. Self-watering containers are much less wasteful than conventional drain-hole pots.

EASIER MANUAL WATERING: First of all, depending on the weather and plant size, I've been able to go for weeks without watering what-so-ever. But in the Summer or during a drought, when you must water, the process is much easier. Using a fill tube makes it effortless. I recommend a garden hose nozzle that does not require you to constantly squeeze the trigger. This allows you to place the nozzle on a low to medium setting as you devote your attention to the plants themselves.

As an added option, you could even create an external sub-box containing a float valve. This would allow you to truly automate the process. Just be careful you don't rack up too much time in the hammock! Your plants still need attention now and again. ;-) Trust me, these plants can get BIG!!!

Gardening in self-watering tote containers: Organic Corn -Al Gracian
Gardening in self-watering tote containers: Organic Corn -Al Gracian
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Gardening in self-watering tote containers: Pepper Plants
Gardening in self-watering tote containers: Pepper Plants
Gardening in self-watering tote containers: Broccoli, Squash, Corn
Gardening in self-watering tote containers: Broccoli, Squash, Corn

Directions:

MATERIALS LIST:

  • 30 Gallon Plastic Storage Container
  • 4" Perforated, Corrugated Drain Pipe
  • 1/2" Rubber Tube (6" length)
  • Landscaping Fabric (for capping off ends of drain pipe)
  • 1/2" Outside Diameter PVC Pipe (for vertical downspout)
  • Empty Water Bottle
  • Duct Tape

  • My personal (1st) recipe for mix*:
  • Use a Respirator Mask!
  • Peat Moss
  • Vermiculite
  • Perlite
  • Miracle Grow Potting Mix
  • 1/3 cup Dolomitic Lime
  • 1 cup All-Purpose Fertilizer

    * Note: 2/3 of my mix was Miracle Grow, which is already pH balanced and fertilized.
            As a result, I didn't add as much Lime or Fertilizer.


CONTAINER:

  1. Drill a hole to snugly fit your Rubber Tube & slide the tube halfway in.
  2. Cut your Drain Pipe sections to stretch lengthways into the bottom of container.
  3. Cap them off with fabric, to keep out dirt.
  4. Drill a hole into the top of the center Drain Pipe to fit the PVC Pipe.
  5. Cut a hole into the opposite end of the Drain Pipe for the Rubber Tube.
  6. Place the center Drain Pipe & the other 2 Drain Pipes into container.*
  7. Cut the Water Bottle in half & tape the lip of Bottle to the end of PVC Pipe.
  8. Place the other end of PVC Pipe into Drain Pipe.

    * Note: In this particular container, I used a smaller drain pipe in the center.
            It is a 4" inch flexible, expandable pipe.
            This allowed everything to fit nicely.

SIP POTTING MIX:

  1. Put on your Respirator Mask.
  2. Mix bottom layer of soil: 1 gallon Vermiculite + 1 gallon Perlite + 3 gallons Peat Moss.*
  3. Make sure it is lightly moistened & gently pack it under & around the Drain Pipes.
  4. Mix 2 cu ft bag MG Potting Mix with 2 gallons Vermiculite + 2 gallons Perlite + 4 gallons Peat Moss.
  5. Add 1 cup All-Purpose Fertilizer + 1/3 cup Dolomitic Lime & mix all together.
  6. Add Potting Mix & place container on a level spot where it will get plenty of sunlight.
  7. Fill with water, using downspout, until Rubber Tube starts to overflow.*

    * Note: I use extra Perlite & Vermiculite in the bottom layer.
            These are inorganic and won't decay, maintaining good wicking.


Click a Thumbnail to See Step-by-Step:

30 Gallon Tote for SIP Planter
Select a sturdy 30 gallon tote container for your SIP.
Overflow hole on 30 gallon growtainer SIP
Drill a hole to snugly fit your rubber tube. This will be for your overflow drainage. I recommend measuring 3.25" up from ground level to find the center for your hole. Use a spade drill bit for clean drilling. (For SIP beds, I currently prefer 1/2" inside diameter PVC pipe. You would need a 7/8" drill bit. Measure up 3.5" for hole center.)
Rubber tube for sub-irrigation overflow
1/2" Outside Diameter Rubber Tube (6" length). Actually a 3 or 4 inch length tube would work too and it would be less likely to get kicked.

Rubber overflow tube inserted into 30 gallon self-watering planter
Slide the tube halfway in. NOTE: This needs to be level when inserted into the opening of your 30 gallon growtainer.
Inside view of SIP planter overflow tube
Inside view of SIP tote planter with the overflow tube inserted halfway in.
Capped off drain pipe of 30 gallon growtainer
Cap of drain pipe with landscape fabric, to keep out dirt.

Hole cut in SIP drain pipe for fill tube
Drill a hole into the top of the center drain pipe to fit the PVC Pipe fro your fill tube.
Slit cut into fabric for SIP overflow tube
Cut a hole into the opposite end of the Drain Pipe for the Rubber Tube. This will allow the tube to be safely nested in side of the water reservoir chamber. This will stop the tube from clogging which would result in failure of your sub-irrigated tote.
Center drain pipe placed in SIP growtainer
Place the center Drain Pipe into the SIP growtainer.

Completed reservoir of 30 gallon growtainer
Place the other 2 drain pipes into container to complete the reservoir of your self-watering tote.
Growtainer fill tube spout made from soda bottle
Cut the water bottle in half. This will funnel water into fill tube.
SIP tote fill tube using pvc pipe
1/2" PVC Pipe for vertical down-spout (fill tube).

30 gallon SIP tote watering tube
Tape the lip of Bottle to the end of PVC Pipe.
Sub-irrigation watering tube
Place the other end of PVC Pipe into Drain Pipe. This will send your water directly to the water reservoir, hence SUB-IRRIGATION!
Assembled 30 gallon growtainer SIP garden system
Assembled, 30 Gallon Growtainer awaiting potting mix.

Box of respirator masks
You NEED to have a Respirator Mask to protect your lungs from dust. This is a necessary safety step.
Wear a respirator mask for safety
Put on your Respirator Mask!
Bulk bags of perlite, vermiculite & peat moss
Gather bulk components for the bottom layer of soil mix in your self-watering tote.

Perlite, vermiculite & peat moss at ratio of 1:1:3
1 gallon Vermiculite + 1 gallon Perlite + 3 gallons Peat Moss.
Mixing up perlite, vermiculite & peat moss
Make sure the perlite, vermiculite & peat moss is lightly moistened to reduce dust. Mix components together.
Packing potting mix to bottom of SIP tote planter
Your mix should be slightly moistened. Gently pack it under & around the Drain Pipes to form the wicking bed of your self-watering system.

30 Gallon Growtainer with spinach seedlings
The last step is to fill the remainder of the SIP container with potting mix. I added perlite, vermiculite, peat moss, dolomitic lime & granulated fertilizer as well.
Young spinach plants growing in a self-watering tote
Ideally, the soil would reach the very top, but this was just a test run of my new prototype. I planted three types of spinach for a Fall planting.
SIP sub-irrigated tote packed with spinach
They were a little crowded but these spinach did VERY well in a self-watering tote!


HOW TO (Make an Albo-grow Box) →