Roses are one of the most popular flowers in the garden, and there are nearly 100 species and thousands of cultivars. Roses are either deciduous or evergreen shrubs with compound leaves that grow upright or are climbers or trailers. Garden roses have many petals compared to wild roses, which have five petals and many stamens, the male organs of a flower.
There are many parts to a rose flower. The number of petals define the type of rose: single roses have four to 11 petals; semidouble roses have 12 to 16 petals; double roses have 17 to 25 petals; full roses have 26 to 40 petals; and very full roses have more than 41 petals, according to "Taylor's Guide to Roses." Inside the petal is the stamen and the anther, which releases pollen. The stigma sits on top of the pistils, which are the female organs. The pistils are attached to the style and the ovary. The hip covers the ovary.
Stems and Leaves
The sepal is underneath the petals and protects the bud when it is young, curling away when the rose blossoms, according to "Roses" by James Underwood Crockett. The bud sits at the end of the stem, also called a lateral. Teardrop-shaped leaflets in clusters, which may have one, three, five, seven or nine leaflets, grow from the stem. Stipules grow at the base of the leaflet.
Stems are attached to canes or branches that grow from the bud union. The bud union, which will appear swollen, separates the top growth of the rose from the roots. Suckers are canes growing from below the bud union, according to Regan Nursery. The anchor roots grow downward from the bud union. Feeder roots grow from the anchor root out into the surrounding soil.