The modus operandi is to turn the plant out of its pot, shake away the soil so as to free the roots, and then select as many pieces of the stouter roots as may be required.
Plant out tender deciduous trees and shrubs raised in pots; plant out tea-roses, mulching the roots.
Pot Neapolitan violets for forcing; or plant out on a mild hotbed.
Plant endive and lettuce at the foot of a south wall to stand the winter; plant out cabbages from the chief autumn sowing.
If it is a risky matter to plant out the robust young fry of trout under an age of three months, it would seem to be an infinitely more speculative proceeding to plant out the delicate week-old larvae of sea-fishes in an environment which teems with predaceous enemies.