The scientific classification of Oleander and Blue Fescue includes the entire classification chart that includes kingdom, family, clade, tribe etc. A kingdom is the second highest taxonomic rank. A taxonomic rank is the level that a living organisms are placed in hierarchical level of arrangement of life forms. All the living organisms are divided into kingdoms. Plant kingdom is a main classification of living organisms that include all plants. There are six kingdoms which are: Plantae, Animalia, Fungi, Protista, Aschaea/Archaeabacteria and Bacteria Eubacteria. Oleander and Blue Fescue kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Oleander and Blue Fescue family is a major factor of Oleander and Blue Fescue Scientific Classification. Plant family helps you narrow the search of your plants. It also gives you idea about, how the plant looks, how the seed will be like etc. These two plant families can be different or same. Oleander belongs to the family Apocynaceae and Blue Fescue belongs to the family Poaceae.
While comparing scientific classification, Oleander and Blue Fescue genus and other classification are also important. Also, when you compare Oleander and Blue Fescue, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Nerium and other plant's genus is Festuca. Oleander tribe is Wrightieae and Blue Fescue tribe is Poeae. Oleander clade is Angiosperms, Asterids and Eudicots and order is Gentianales whereas Blue Fescue clade is Angiosperms, Commelinids and Monocots and order is Cyperales. Every plant have subfamilies. Oleander subfamilies are, Apocynoideae and Hippocastanoideae and Blue Fescue subfamilies are Pooideae. In this way you can compare scientific classification of Oleander and Blue Fescue and other products also.