Sounds like an interesting project! First, what country are you in? The device selection does vary.
The main issue with zigbee Sensors, which are commonly used in agriculture, is there relatively short range. About 40 feet for each hop. However, you could have up to 15 hops into the hub and another 15 out, so that helps. Also zigbee is somewhat better than Z wave for transmitting through high humidity, including rain. So that’s good news.
All of that said, a hop is the distance to the next repeating device, which Has to be Mains powered. So are there places to put in either smart lightbulbs or plug-in devices to handle extending the range?
There are some Z wave options as well, and the newest ones will have a longer range for a single hop, maybe as much as 250 feet reliably outdoors clear line of sight on a clear day. But again rain can reduce that. Or even just high humidity. So It all comes down to small details.
Third, what temperature ranges are we talking about? There’s a big difference between planning for, say, the San Francisco Bay area and planning for Minnesota.