The main idea behind the solar mote is to affix it permanently on key locations inside a greenhouse.
The PCB is held between two plastic enclosure pieces. The sensors are mounted on the mote headers.
Below is a mock-up of the design together with the assembled mote. The solar panel is mounted on the other side.
The plan is to use a hub based on an RPI. The range on the radios tested on the lowest power level is ~22 m.