Willow
willow
The Willow integration allows you to monitor the health of your indoor plants in Home Assistant using Willow sensors.
In Apple Home through HomeKit Bridge
What HomeKit Bridge makes of each kind of entity this integration creates, read from its source code. A device only gets the ones that apply to it.
| Entity | Shows up as | Note |
|---|---|---|
sensor | Sensor (humidity, light level, temperature) |
What people report
Willow plant sensors need the Willow cloud.
- Works3
| Device | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| Willow on ESP32-S3-BOX | Works Local | First outside user got commands working first timeSaved copyI happened to have an ESP-BOX on hand, so I thought I'd give this a go… and it's pretty awesome. Everything worked flawlessly first time, I was immediately able to start giving commands and they worked ("Hi ESP, turn (on|off) the office shapes"). At this point, all I need is to be able to self-host the inference server and I can start to retire Siri for home control. I have a Core-i5 6500T with 8GB of memory running HAOS, and I'm not sure if it'll handle it from an earlier comment… I'd be fine bumping the memory to 16GB however outside of something like a Coral TPU, I have limited upgrade … Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23. | Reddit comment · 2023-05 | |
| Willow plant sensor | Works Cloud | Cloud required; history not exposedSaved copySupported devices: Willow Sensor. Limitations: A cloud connection is required for operation. Historical sensor data stored in the Willow platform is not exposed through this integration. If a Willow sensor goes offline, Home Assistant retains the last successfully retrieved values until new data becomes available. Excerpt saved from home-assistant.io on 2026-10-23. | Docs | |
| Willow voice assistant | Works Local | Recommended Alexa alternative with speaker authentication and nearest-device responseSaved copyWillow's my favorite alternative: https://heywillow.io/ Includes speaker authentication and automatically detects which device is closest and responds from that one. Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23. | Reddit comment · 2024-03 |
Gathered from GitHub issues, pull requests, discussions and docs, and from r/homeassistant. These are individual reports, so check the linked thread and the date before you buy.
How it connects
Cloud polling
Goes through the maker’s cloud, asking it for updates every so often. Needs the internet and an account.
Details
| Installs (analytics) | 15 |
|---|---|
| Quality scale | Bronze |
| Added in | Home Assistant 2026.10 |
| Set up in the UI | Yes |
| Maintainers | @paxprz |
Devices listed in its documentation
- Willow Sensor
Limitations from the docs
- A cloud connection is required for operation.
- Historical sensor data stored in the Willow platform is not exposed through this integration.
- If a Willow sensor goes offline, Home Assistant retains the last successfully retrieved values until new data becomes available.
In ReReHome
Whatever HomeKit Bridge shares reaches Apple Home as normal HomeKit accessories behind your Home Assistant bridge, so ReReHome shows and controls them like any other.
Bridges get their own settings page listing the accessories behind them.
