Note: Verdant Squill is a "Trim the Root Fibers" type harvest, should be able to test with others of that harvest type as they grow at the same tower.
The entire Kush Waterworks Aquaduct line has been tried.
On the Life Line Aquaduct (UE) the MomMouse's (1400, 3427) and Noreferti's (1380, 3427) towers has been tried.