The Perfect Method to Water Plants When on Vacation. For Vegetable Gardens and Potted Plants

Get Plastic Bottles of Two Different Sizes
Get bottles of different sizes, such as 0.5-liter and 1.5-liter bottles, or 1.5-liter bottles and 3-liter jerrycans, and so on. The larger the bottle, the longer the water will last.
Cut the Smaller Bottle
Take the smaller plastic bottle and cut it roughly in half, as shown in the photo. Dig a hole to bury it and fill it with water.
Prepare the Larger Bottle
Now, take the larger plastic bottle and cut it in half as well.
Place the Larger Bottle Inverted Over the Smaller One
Place the top half of the larger bottle upside down over the smaller one, creating a “lid” (see photo).

How it Works:

This simple irrigation system is now complete and will work automatically: the more sunlight there is, the more the plants will be watered.