Still going strong... added some new stuff today but still have a long way to go. Here's a screenshot from a current build showing the 'Grow Room', a central hub for cultivating and examining plants.
The top bar displays green arrows for navigating various plant configurations (multiple grow rooms) and different icons for the supplies and systems in any given grow room: lights, water, climate, and fans. The plant icons in the middle display the stage of the plant and colored bars for growth/vitality (green) and size/yield (red). The icons on the bottom are for starting a new plant: selecting seed quality, bucket size, and rooting medium.
Also the sim will track seasons, which affects the room's temperature and humidity. All the systems affect the environment and the plants in different ways and different strains of marijuana have different environmental preferences.