How Do Cowbells Work?

World's first pressure-regulated self-watering technology that lets plants drink on-demand without overwatering

Pressure-Regulating Technology (Better Than Drip Irrigation)

Cowbells are like hamster bottles for your plants! Plant roots and soil use capillary action to absorb water from Cowbell's ceramic spike.

As your plant drinks, water and air leave the reservoir, causing the pressure inside to change.

A thirst sensor (pressure valve) inside the lid automatically opens and closes based on the plant's thirst needs, regulating the pressure to let water out.

Through physics, your plants are able to "talk" to the Cowbell, telling it to let water out when thirsty.

Thirst Sensor

As the pressure inside the reservoir changes, the thirst sensor (a pressure-regulating valve) inside the lid automatically opens and closes to let air in, which equalizes the pressure inside the reservoir, letting water diffuse from the cone to water your plant.

The technology uses physics and is completely analog. No electronics or batteries needed.

Vacuum-Sealing Lid

Cowbell's lid keeps water in the reservoir suspended in an equilibrium so water will not drip from the system into your plant by itself (after ~30 minutes of equalizing inside your plant).

Precison-Pore Watering Spike

The Cowbell cone is made from natural porcelain engineered with precise pores that allow water to diffuse.

Because the reservoir is vacuum-sealed, water will not constantly drip from the spike by itself after the reservoir has equalized.

As such, Cowbells last longer than traditional drip irrigation systems that have a constant drip speed.

On-Demand Irrigation

Cowbells water only as your plants need it and do not supply a constant drip over a specific period of time.

The speed of watering depends on hundreds of physics and biology variables like plant species, plant height, strength and depth of roots, soil type, temperature, season, sunlight conditions, and even container type (eg terracotta will drink more water than plastic pots).

For example, a Cowbell might not water for 3 days, then water steadily for the next 10 days. Or it might use up 50% of its reservoir in the first 2 days then slowly water for the next 10 days. Your plant decides.

Our estimate of 2+ weeks is based primarily on the size of the pot and has been verified by testing hundreds of the most common plant varietals.