Our Sensor measures soil moisture, ambient light, temperature and humidity. These four factors are the most critical to your plant’s wellbeing and growth. The Willow App provides further care instructions regarding recommended soil types, fertilising, pest maintenance and more.

Our measurements are taken to within 2% accuracy. Please see our Tech page for the full list of measurements and specifications.

Yes. Our Hub allows you to connect up-to 40 Sensors all at once to your home Wi-Fi network. Your plant data is securely uploaded to the cloud so you can access it anytime, anywhere via our App.

At its simplest, a user first pairs their Willow Hub with their phone and connects the Hub to their home 2.4GHz WiFi. Next, a user pairs their Sensor to the Hub and adds the Sensor to their houseplant.

For a step by step guide, check out the Setup page.

The current version of our App is only for single users. However, we have begun to conceptualise how we might offer this as an option in the future. As you are notified with your plant care instructions, you can easily forward or share these plant care guides with your friends and family.

We have designed the Sensors for indoor use. They will not withstand heavy rains, prolonged harsh sunlight, or extreme temperature differences. However, the Sensor is splash resistant so using it in a potted plant on your balcony or porch, if well protected, may not be a problem.

The Sensors can only be used in one plant at any given time. If you wish to move the Sensor to a new plant, you are free to do so but you must first unpair the existing plant and re-pair with your new plant within the App. 

Not currently. Potential future feature, but for now the Willow Sensor and Hub are a closed system.

Willow was designed with longevity in mind. Our Sensors make use of ultra-low-power electronics which means your battery will typically last two years. Should you need to replace the battery, remove the top half of the unit, unscrew the housing and replace the CR2477 coin-cell battery.

The range of the Sensors' Bluetooth is 20m line of sight.

Use a clean, soft, damp cloth or wipe to clean the device. Do not use any chemical detergents, powders or other agents such as alcohol.

The Willow Sensor works best across your traditional indoor potting mixes. Using mixes that are particularly compact (i.e. sand) or loose (i.e. leca, clay pebbles) will interfere with the moisture reading.

Do not attempt to measure liquids. Our Sensor is designed to measure soil moisture. Placing our Sensor in water, or any other liquids, may damage the unit which will not be covered by the guarantee.

Our database includes all your household favourites including Monsteras, Philodendrons, Alocasias, Ficus, Aloes and Cacti. The database includes hundreds of houseplants and is growing all the time. Users can even suggest plants for Willow to add via the App.

All Willow products have a standard one year warranty from the date of purchase. For any warranty claim, please refer to the warranty and returns page

We strive to do a better job. Don’t get us wrong, existing solutions are potentially great at providing readings. Where they fall short, and where Willow exceeds, is the application of this data.

You may purchase a moisture probe, stick it in your plant pot and get a reading of 4 or perhaps 40%. Great, what next? Water your plant because that seems dry? This simple reading doesn’t consider if your plant prefers evenly moist soil or partially dry, it doesn’t consider the time of year (seasonality) nor the time of day or how long your plant has been sitting at 40%. All these considerations are important in your plant care, and Willow factors it all in!

We know your plants’ conditions AND we know plants.