smart plant sensor
smart plant sensors with app
smart plant sensor for light
smart plant sensor



Regular price $39.95
Regular price $2.00 Sale price $39.95
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Rated 5.0 out of 5 stars
2 Reviews

Say hello to happy, thriving houseplants with new growth, green leaves and zero guessing games year round

Our beautifully crafted Sensor continuously monitors your plant’s soil moisture and ambient light, temperature & humidity. The Sensor sends data to the Hub, which notifies you in the app when action is needed to keep your plant happy.
Please note: the Hub and Sensor are besties. One won’t work without the other.

Free standard shipping on orders over $200
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Why Willow

Who has time to stress over yellowing leaves or another plant funeral (in this economy)? Know exactly what your plant needs anytime, anywhere. Your plants will love having a voice and you’ll love having a thriving indoor jungle that’ll make your mates green with envy. 

Sensor Details

  • High quality, corrosion-resistant design
  • Dust, dirt and water-resistant
  • Pair up to 40 Sensors to 1 Hub
  • Communicates with your Hub via Bluetooth
  • Includes long-lasting coin cell battery
  • Features adjustable probe length suitable for pot depths up to 20cm (8”) deep


Is the Sensor for you?

A Hub is required to pair with the Sensor in order to collect plant data. If you currently have a Willow set up with a Hub and need a new Sensor to keep tabs on an additional plant – this is for you!

No Sensor, no Hub? No problem. Our Plant Packs have everything you need to get started.

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How Willow Works

The setup process is simple:

  1. Pair your Sensor and Hub with the Willow app for iOS and Android
  2. Pick a plant that needs a little love and insert the Sensor into the soil
  3. In the app, select your plant type or use our smart scanner to auto-identify your plant
  4. Name your plant and you’re good to grow! When it’s time for an action, you’ll get a notification

Sensor Tech Specs

Willow Sensor

Tech Specs:

  • Dust & Waterproof Rating: IP54
  • Connectivity: Bluetooth 5.2
  • Battery: Replaceable CR2477 coin battery

Dimensions & Details:

  • Size: 172mm length and 32mm diameter
  • Length with Extension: 247mm Length
  • Weight: 100g
  • Colour: Charcoal, Moss
  • Warranty: 1 year from date of shipping


  • Light: 0 – 100,00 Lux with ±2% variance
  • Temperature: 0°C – 55°C with ±0.3°C variance
  • Humidity: 0% - 100% with ±1.8% variance
  • Moisture: 0%-90% with ±2% variance
Rated 5.0 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
2 reviews
  • SK Profile picture for Sam logo
    Sam K.
    Verified Reviewer
    I recommend this product
    Rated 5 out of 5 stars
    2 hours ago
    Love it

    Great design, easy to use, I learnt so much more about what my plants need to really thrive 🌱

  • EM
    Eduardo M.
    I recommend this product
    Rated 5 out of 5 stars
    19 hours ago
    Life saver!

    I’m a notorious plant killer. Got one of these for a yucca me and my wife recently potted and it’s doing better than ever!

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