Cowbell Mini Self-Watering Plant Care Kit (250mL)

Regular price $39.97 USD
Unit price

Save 10% on 2-packs and 20% on 4-packs!

Everything you love about our Cowbell Classic 750mL now in a petite 250mL size, perfect for all your plants in 3-5 inch planters.

Cowbell Mini takes the guesswork out of plant watering by keeping plants self-hydrated for 1-5 weeks (depending on individual plant thirst needs)..

Works best in soil-based potting mixes. Does not work in leca or semi-hydro.

*Each Cowbell Mini comes in a reusable gift tube. Plant and planters not included. 

Cowbell is unlike any other self-watering product you've used before!

Cowbell's pressure-regulated reservoir and lid valve keeps water suspended in a precise vacuum which means water doesn't drip by itself.

Plant roots and soil draw water from Cowbell only as needed using natural biology and physics processes like root pressure, capillary action, cohesion tension and water diffusion.

Once the pressure inside the reservoir reaches a certain threshold, the lid valve automatically equalizes the pressure. This means your plant roots never have to work too hard to draw water from the reservoir, while also preventing Cowbell from dripping unnecessary water into your plant.

No over-watering! No root rot! No water waste!

Science is awesome.

  • Reservoir: Shatterproof, weatherproof, recyclable, luxury PET sourced from Japan. BPA-free.
  • Lid: Tritan copolyester sourced from the USA. GREENGUARD® Certified for low chemical emissions.
  • Valve: Medical-grade silicone sourced from the Netherlands.
  • Protective Spike: Bamboo, glass and polypropylene sourced from China. Dishwasher-safe.
  • Cone: Natural porcelain sourced from a small family-run factory in China that uses ancient kiln firing techniques. Dishwasher-safe.

We recommend a container with at least 3 inches (7.6 cm) of soil height for stability.

  • One 250mL Cowbell will last at ~2 weeks for most pre-watered houseplants in 3"-5" diameter containers.
  • Use multiple Cowbells in larger containers.

  • Assembled height: 9" (22.9 cm)
  • Spike height: 3.5" (8.9 cm)
  • Reservoir volume: 250 mL
  • Single unit weight: 0.25 lb (0.11 kg)

We are proud to be part of the 1% For The Planet movement!

Each Cowbell is packaged and delivered in its own eco-friendly gift box.

$1 of every box goes towards ocean conservation and reforestation projects around the world. 

Set up your Cowbell in minutes!

  • Water your plant before use for the longest-lasting results. Don't worry about overwatering, Cowbell will wait until your plant has used up the water in the soil before drinking from Cowbell.
  • Twist and tighten the spike onto reservoir
  • Bury the spike into damp soil
  • Fill your reservoir with clean water.
  • Seal tightly with lid to create vacuum seal
  • Refill by simply removing the lid. Repeat the above steps for every refill.

Cowbell does not need to be cleaned regularly. But if you'd like for it to look pristine, it is easy to clean!

If you use Cowbell outdoors or in direct sun, or if you fill your Cowbell with rainwater, you may find some natural algae growth in the reservoir after a few months.

We recommend twisting off the spike and handwashing the reservoir with soap and water.

We don't recommend putting the lid or reservoir in the dishwasher as it may cause some warping at extremely high temperatures. 

The spike and cone are dishwasher safe but you can also rinse it by hand or clean it with a scrub brush if you find that anything has plugged the ceramic cone.

We stand behind the quality of our products and will replace any components within one year of purchase.

If you have any issues with your Cowbell, please reach out to us at and we'll do our best to make it right.

We ship out of our Florida warehouse.

In stock items ship same business day if order placed before 1pm ET (US). Items ship next business day if placed after 1pm ET (US).

If you choose Economy shipping, your Cowbells will be delivered between 3-7 business days within the US and Canada.

We insure every order.

If you need faster, guaranteed shipping, you will see priority options during checkout.

You will receive an email or text with tracking information when your Cowbell leaves our Florida warehouse!

Enjoy peace of mind with our easy 30-day return policy.

Please see Returns & Exchanges for more details.

Contact us any time at or 1-888-98-PLANT if you have any questions or concerns!

We're excited to offer International Shipping to select regions outside the US!

Cowbell pre-pays all customs and duty fees, so you are not responsible for any additional fees, and you don't have to worry about shipments being stuck in customs.

The shipping price you see at Checkout is the final price you pay.

Shipping calculated at checkout.

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Did You Know?

Your plant's roots have almost as much power as a Dyson vacuum cleaner! That's why your plant is strong enough to drink water from Cowbell all by itself when it's thirsty.

Aren't plants amazing?

Plant Parents Love Cowbell!

It's unanimous! Customers give Cowbell two green thumbs up! Share your journey with our community by writing a review below.