The scientific classification of Sunflower and Astilbe 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. Sunflower and Astilbe kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Sunflower and Astilbe family is a major factor of Sunflower and Astilbe 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. Sunflower belongs to the family Asteraceae and Astilbe belongs to the family Saxifragaceae.
While comparing scientific classification, Sunflower and Astilbe genus and other classification are also important. Also, when you compare Sunflower and Astilbe, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Heilanthus and other plant's genus is Astilbe. Sunflower tribe is Heliantheae and Astilbe tribe is Not Available. Sunflower clade is Not Available and order is Asterales whereas Astilbe clade is Angiosperms, Core eudicots and Eudicots and order is Rosales. Every plant have subfamilies. Sunflower subfamilies are, Helianthodeae and Astilbe subfamilies are Not Available. In this way you can compare scientific classification of Sunflower and Astilbe and other products also.