For him she had worked and saved unceasingly, and when he was old enough she sent him to the city to school and kept pace with him in the lessons he brought home at night.
Using what she knew of her husband's work as a guide, and profiting by pamphlets published by the government, every hour of the time outside school and in summer vacations she worked in the woods with the boy, gathering herbs and roots to pay for his education and clothing.

So the son passed the full high-school course, and then, selecting such branches as interested him, continued his studies alone.
From books and drug pamphlets he had learned every medicinal plant, shrub, and tree of his vicinity, and for years roamed far afield and through the woods collecting.

After his father's death expenses grew heavier and the boy saw that he must earn more money.

His mother frantically opposed his going to the city, so he thought out the plan of transplanting the stuff he gathered, to the land they owned and cultivating it there.

This work was well developed when he was twenty, but that year he lost his mother.
From that time he went on steadily enlarging his species, transplanting trees, shrubs, vines, and medicinal herbs from such locations as he found them to similar conditions on his land.