Hustich grew up in poor conditions as a single parent in Helsingin Sörnäinen . He studied botanical and geoscience at the University of Helsinki . His dissertation (1937) addressed the effects of altitude and climate on the fell vegetation in western Lapland. He continued studying plant genetics later in both Lapland and in Arctic North America, where he made several expeditions in the 1930s and 1960s. The factors influencing the distribution of vegetation and, in particular, woodland and forestry issues, as well as the tree trunk surveys, were Hustich's key research subjects.
In 1951 Hustich was appointed Professor of Economics at the Swedish School of Economics . Later, he served as vice-rector and rector of the same university. As a researcher in economic geography, Hustich discussed, among other things, regional income differentials, development areas, changes in the business structure and agricultural problems. He wrote several popular works and textbooks in the field.
These are three studies published in 1954
On Forests and Tree Growth in the Knob Lake area, Quebec-Labrador peninsula
The Lichen Woodlands in Labrador and their Importance as Winter pastures for Domesticated Reindeer
Notes on the Forests on the East Coast of Hudson By andJames Bay