Container Gardening

DIY Sub-irrigated Planter Build – self watering, easy container garden



Built this sub-irrigated planter (SIP) as a Mother’s Day gift. My costs were $15 for materials, plus potting mix and plants. I detail materials, building instructions, and some basic do’s and don’ts.

Materials:
14″ pot with no holes (High Density Polyethylene, UV resistant)
About 2′ perforated drainage pipe (flexible/expandable)
12″+ length of tube (water fill tube)
Plastic grocery bag or landscape fabric
String
A few small rocks
Garden lime (dolomite)
Plant food (organic is safer for the plants)
Potting mix
Plants

Tools:
Dremel or other cutting tool
Scissors

16 Comments

  1. this is a really great idea! wonder if i could do the same thing with the black tubing on bottom of a small wooden planter box? hmmmm.

  2. Loved your video. Question though. Now that the growing season finished, how well did the pots really work??? Did you have to do any tip watering? Before I try this method, I need reassurance that the plant's roots were able to reach the moisture. That the water did wick to the top of the planter where the roots are. Question 2: how often did you have to water your pot's bottom; know when it needed refilling? I look forward to your answers and to seeing if this is worth trying in the spring.

  3. I would highly recommend putting a fine screen on the water pipe. Mosquitoes WILL fly down and lay eggs in the water.

  4. One thing may want to consider is cut a 45 degree angle on the bottom of your pipe it will help your water flow

  5. what about the chemicals leeching from PVC in general? i am thinking about using hydroponic clay and a layer of landscape fabric between it and the soil.

  6. Thank you so much for doing this. Best DIY video on how to build a SIP, great assembly instructions and demonstration on how it works. I really wish your channel would take off because you're a wonderful teacher.

  7. Very nice design. I do a similar method. In 5 gallon buckets i use the 4 inch pipe bigger tubs like 18 gallon i use 6 inch pipe. Sometimes I'll use the 2 technique. The important thing some people get wrong is they don't have a layer of air between the water and soil 1 inch is all that's needed.

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