I can try and simplify it if you want (will take me quite a bit longer though...)
Basically with this script you need to have the Unlit plant and the Lit plant placed in the CS in the same spot this means manually move them till it looks like one plant (simply for a realistic look so the plants don't seem to be jumping around when they switch).
Be sure to click References Persist on both of the plants!!!!
Then attach this script to a surrounding object that the player can't pick up.. maybe a rock? Or a ring placed under ground? Something like that. The object you attach the script to must be in the same cell as the plants.
This script will effect ALL of the two plants in the same cell as the item. This means if you place 16 pairs of Day and Night plants in the cell all of the pairs will rotate between the glowing one and the non glowing one every day/night.
Enjoy, comments, concerns, and constructive criticism all welcome and appreciated.
Tested and woks at full functionality if directions above are followed.
Morrowind Only required.
Begin plant_lightshort DayTimeshort NightTimeshort DoOnceshort DoOnce2float timerif ( CellChanged == 1 ) set timer to ( timer + GetSecondsPassed )endifif ( timer >= 0.01 ) set DayTime to 0 set NightTime to 0 set DoOnce to 0 set DoOnce2 to 0 set timer to 0endifif ( DayTime == 2 ) if ( DoOnce == 0 ) "Night_Plant_ID"-> Disable "Day_Plant_ID"-> Enable set DayTime to 1 set DoOnce2 to 0 set DoOnce to 1 endifendifif ( NightTime == 2 ) if ( DoOnce2 == 0 ) "Night_Plant_ID"-> Enable "Day_Plant_ID"-> Disable set NightTime to 1 set DoOnce to 0 set DoOnce2 to 1 endifendifif ( DayTime == 0 ) if ( GameHour > 7 ) if ( GameHour < 20 ) set NightTime to 0 set DayTime to 2 endif endifendifif ( NightTime == 0 ) if ( GameHour >= 20 ) if ( GameHour <= 23 ) set DayTime to 0 set NightTime to 2 endif endifendifif ( NightTime == 0 ) if ( GameHour <= 7 ) set DayTime to 0 set NightTime to 2 endifendifend plant_light