plantlet

[plant-lit, plahnt-]

noun

a little plant, as one produced on the leaf margins of a kalanchoe or the aerial stems of a spider plant.

Origin of plantlet

First recorded in 1810–20; plant + -let

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

As the plantlets grow, care must be taken not to shade them too much.
Cornell Nature-Study Leaflets
Various
The plantlets should be removed from these highest temperatures, as a rule, as soon as germination is completed.
The Nursery Book
Liberty Hyde Bailey