Monday, March 22, 2010

Poor Man's Drip Irrigation



Ah, the two liter soda bottle: is there any problem it can't solve? This week's repurposing of our time-honored refreshment container is for drip irrigation. Drip irrigation, to review, is simply the art of delivering water slowly, right where your plants need it, with as little possible wasted to evaporation and none given as free nourishment to weeds.  Note: This kind of "system" is better to install before you transplant those delicate little seedlings or sow those tiny rows of seeds.

Take some 2-liter soda bottles and remove the labels. I guess it isn't strictly necessary, but it does make them look neater and keeps my blog from encountering any awkward product placement issues. Next, find a small but sturdy pin. I used a thumbtack. Poke a series of holes all around the bottle. I did about 2 dozen. When you fill it with water, it will look like this:


Now, bury in your planting area. Some people cut off the bottom and plant them upside down, but I find too much garden and soil debris falls into the bottle, and things like mosquitoes use the water for breeding...not good. I bury them right side up, leaving only the top neck of the bottle exposed, or at least no more than a few inches. Then I plant within about four inches of the bottle on all sides.

When you are ready to water, simply open up the cap, fill with water, and re-close. The bottle will slowly drain and the water will seep slowly and deeply into the ground, without worry of evaporation loss.

This technique is great with square-foot gardening, or with containers, which tend to dry out quickly. Give it a try!

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