Orange (Citrus Sinensis) forms powerful long-lasting (on average up to 70 years) trees, whose height reaches up to 20 meters. The crown has a spherical or pyramidal, dense, leafy shape. Branches are often with thorns, the length of which sometimes reaches 10 centimeters. Flowers are axillary, single, or in bunches of 2 or 3 pieces, fragrant, stamens from 20 to 25 with free threads fused or vice versa, and some varieties of stamens are sterile. The fruits have a spherical, somewhat elongated or squeezed-spherical shape of various sizes, and the peel is smooth or rough, yellow-orange flowers.