Here's what you need:
- Un-glazed clay pots - I used 6 inch pots and 4 inch pots.
- Clay saucers for the pots.
- Silicon Caulk
- A caulk gun
Make sure that the clay saucers line up well with the top of the pot. The six inch pots were great but the 4 inch ones were more difficult to line up correctly.
Put a bead of caulk all the way around the saucer.
Then carefully line up with pot to fit snugly with the saucer. Gently push down. You want a good amount of caulk to hold the two objects together. If you push down too much you will squeeze out the caulk and leave nothing to bind the pot and saucer together.
Smooth out the caulk to make sure there are no gaps. I used my finger which I dont' advise. A damp sponge or towel would be a better choice.
After curing for about 24 hours I brought my DIY ollas outdoors to test. I filled them with water and found no leaks.
Next I buried the pot into the soil so that the filling hole was left slightly above ground. It can be covered with a rock or another pot to keep moisture from evaporating too quickly.
The olla isn't the only method I'm using to water my plants this year. Soaker hoses are an awesome way to water the garden. I added several soaker hoses to water some of our 40+ tomato plants! Make sure if you use soaker hoses that you also add mulch over them to help reduce evaporation.
How do you irrigate your garden?