This arrangement is adopted in order to prevent excessive luxuriance in the grass.
The bracing weather of Canadian winters is followed by the warmth and humidity of genial summers, under which crops grow in almost tropical luxuriance, while the cool evenings and nights give the plants a robustness of quality which are not to be found in tropical regions, and also make life for the various domestic animals wholesome and comfortable.
The glaciated rocks of the glen are clothed with vegetation of peculiar luxuriance, flourishing in the mild climate which has given Glengarriff its high reputation as a health resort for those suffering from pulmonary complaints.
The following genera are also found in such positions in great luxuriance, viz.: Fagus, Anopterus, Phebalium, Eucalyptus, Richea, Cyathodes, Pomaderris, Prostanihera, Boronia, Gaultheria, Correa, Bedfordia, Aster, Archeria, Atherosperma, &c. In the extreme west the trees and larger shrubs do not appear to ascend the schistose rocky mountain slopes of the central and eastern parts.
Pomponius Mela speaks of the climate as unfit for ripening grain, but he, too, notices the luxuriance of the grass.