|
The Range of Plant Adaptation in General. After studying acompilation of this kind the great range of plant adaptations becomesevident. There is a large group of materials which are hardy underalmost all conditions. There are many other types of material, how-ever, too numerous to mention in detail, which are adapted only tospecific sections of the country. The Adaptation of Evergreens in Particular. The questionof the adaptation of evergreens is perhaps the one which may causethe most serious discussion. Evergreens are a group of plants whichpossess widely varying characteristics, especially of hardiness underdifferent climatic conditions. The evergreens which will flourish in thehumid and less severe atmosphere of Long Island will not grow throughthe windy regions of the Middle West, nor in the extreme exposure ofthe water-front conditions of the North Atlantic and the Great LakesRegion. Neither will evergreens which flourish in the sandy soils ofMichigan grow upon the clay soils of the Middle Western States.Therefore, the question of evergreens has been carefully considered, andan attempt has been made to differentiate the groups and the require-ments of each. This subdividing of evergreens for various locationsis based entirely upon the normal protection. Many evergreens, aswith other plants, will thrive under abnormal conditions if they arenursed and protected during the severe winter months. On the otherhand, many evergreens which will withstand the exposures of winterconditions will not continue to thrive when placed in the clayey soilsof some of our Middle Western States, where they are subjected to thesevere baking and drying out of these soils during the summer months. |
|||
|
