I'd like to give you a very brief introduction into the world of sub irrigated planters. I don't have a green thumb but I decided to grow some fresh herbs & peppers this year so I started looking for watering methods for container gardens. I quickly became intrigued with the idea of sub irrigation, which waters your plants from the bottom up through the root system. I found a great DIY that also explains the benefits of Sub Irrigated Planters (SIPs) as quoted below. Thanks so much to Running With Guts for getting me started!
I went with the second method described in this post with a few modifications. Instead of seltzer bottles I used this corrugated perforated pipe and this bulb guard tube from Lowe's.
- They have the capacity to hold large volumes of water without over-watering plants.
- You don’t need to water as frequently. Just fill it up until the planter starts draining from the overflow tube, and you’re good to go for a week or two (depending on capacity and your regional climate). Going away for a week or two, but can’t find someone to come water your garden? No problemo!
- They’re portable; I can start plants that are vulnerable to hard frosts sooner, because I can move the planters inside at night/on colder days.
- The built-in reservoir system gives your plants’ roots access to much needed oxygen, in addition to the water.
- Corrugated perforated pipe
- Bulb guard tube
- Heavy duty scissors
- Landscape fabric
- Plastic bags
- Rubber bands
- Plastic totes or old recycling bins
Next cut a hole in one of your corrugated tubes that is just big enough for the bulb guard tube, which will be used to water your plants. You'll want to cut the bulb guard tube about a foot taller than your tote for ease of use in the future. You should now have something similar to the picture below.
Last step is landscape fabric to cover the corrugated pipe. You don't have to be too perfect or fussy here, just cut a section large enough to tuck in a bit around the edges. Don't forget to cut an x in the fabric for your fill tube.