The Signal Seedling is a small broad-leaved plant used to test water, soil, and transmission quality throughout Aero Lagoon.
Indicator response
A healthy seedling holds two leaves level and keeps its central bud closed. In polluted water the leaves curl downward; under signal corruption the bud opens early and flashes pale blue.
Because the response is visible within minutes, restoration teams plant seedlings beside pumps, canals, and weather terminals before moving larger species into an area.
Growth
The seedling stores clean signal patterns in the veins of its leaves. After seven stable days it develops a third leaf and can be transplanted without losing its environmental record.
Cultivation
Plants grow best in dark soil mixed with canal sand. Direct exposure to a damaged SAT-0 pulse should be limited because the seedling may begin repeating the error instead of reporting it.
Public use
Eyeview Elementary keeps a tray of Signal Seedlings in its garden laboratory. Students compare leaf positions during ordinary rain and static-rain drills.
Reproduction
N/A