Set of 24 automatic watering cones for plants (indoor and outdoor) Adjustable valve devices for garden irrigation systems

Adjustable Valve: The flow rate is controllable. This plant watering device, equipped with a regulating valve, allows you to adjust the drip rate (from 0 to 60 seconds per drop) for continuous irrigation from 1 to 15 days. Simply adjust the valve according to your needs.

Simple and Convenient: Tool-free installation; drill a few holes in the bottom of the bottle or cut off the end to allow air circulation. Then adjust the flow rate on the control valve according to your water needs.

Versatile Use: Suitable for vegetables, potted plants, houseplants, patio plants, herbs, hanging baskets, office plants, outdoor gardens, small trees, and shrubs.

Warning: Compatible with bottle necks with a 2.8 cm (1.1 inch) inner diameter; Fits most beverage bottles, but not standard mineral or purified water bottles. (Please measure the inside diameter of the neck, including the threads, before installation.)