There's a few trees that I just don't trust my automatic watering system to take care of for 2 weeks. So those get loaded up for 2 week vacay of their own
Automated Bonsai Watering - Bonsai Empire
Automatic Watering System - Watering Bonsai part 2 - YouTube
Automated Bonsai Watering - Bonsai Empire
Automated Bonsai Watering - Bonsai Empire
Automated Bonsai Watering - Bonsai Empire
Raspberry Pi–powered bonsai watering system - Raspberry Pi