Keeping houseplants watered while you are away is always a concern for plant lovers. Making an inexpensive watering system for your plants from plastic pop bottles allows you to take care of your plants without the security risks that come from having others enter your home when you are not there Keeping houseplants watered while you are away is always a concern for plant lovers.
Wash and dry the soda bottles. For very large plants, you can use a 2-liter bottle, but for most plants in small-to-medium pots, a 20-oz. bottle is ideal.
Mark a line around the bottle 2 inches from the bottom. Cut the bottom off the bottle, following your marking. Use a sharp knife or puncture the bottle and cut with scissors.
Place the cap on the bottle. Drill four 1/4-inch holes evenly spaced around the neck of the bottle, approximately 2 inches from the cap. Add 2 or more holes to the cap
Insert the bottle into the soil in the plant pot so that the holes rest beneath the soil level. Submerge the bottle up to the cut rim if you like.
Fill the bottle with water. The water will gradually drip into the soil, keeping soil moist. Refill the reservoir regularly to provide a constant source of water.