This big stick solved my smart garden connectivity problems
Briefly

The Home Assistant Connect ZWA-2 is a 12-inch tall antenna designed for Home Assistant systems, enhancing the connectivity for Z-Wave devices, including those with Long Range specifications. Its installation is simple, involving connection via USB to a compatible hub, which allows for rapid integration within existing smart home networks. The ZWA-2 can communicate with devices over a distance of up to a mile and a half in optimal conditions. Its large size aids in receiving even faint signals, although it may stand out in home decor.
The Home Assistant Connect ZWA-2 antenna is a 12-inch tall device designed to enhance the connectivity and responsiveness of Z-Wave networks, controlling devices up to a mile and a half away.
Installation of the ZWA-2 is straightforward, requiring just a USB connection to a Home Assistant hub, leading to effortless integration and improved network performance.
Read at The Verge
[
|
]