https://gardeningsg.nparks.gov.sg/gardening-resource-library/etiolation/
Etiolation | GardeningSG
Learn about etiolation and how to prevent it.
etiolation
https://jukuri.luke.fi/items/55d72b7b-f315-4e6f-af8f-34eddb8d12e4
Effect of etiolation and shading on the rooting of woody ornamental cuttings
on theeffectetiolationshadingrooting