The Harvst automation and self watering system can be added to most polytunnels and greenhouses. It runs off grid, using solar power and rain water. A WiFi connection is not needed, but if your greenhouse or polytunnel is within range of your home WiFi, you get the added benefit of being able to monitor and control your system from anywhere.
Watering a greenhouse or polytunnel every day can become a chore, and when you leave home for a few days, plants can easily wilt and die, especially if there are a few hot days. Simple timer systems are available which drip water to your plants, but these can easily over water in cool periods, and under water in hot periods, especially in an enclosed space that gets really hot.
Harvst monitors the temperature and soil moisture to make sure that your plants get just the right amount of water. You can configure your greenhouse irrigation system using the online app, based on what you’re growing, and the time of year. You can water two zones separately, too.