1. Adenium Flower Plant is a natural bonsai plant. It has fleshy leaves and beautiful 2-inch pink or white open-trumpet shaped flowers. It is a succulent, and forms more of a bush than a tree. Desert Rose plants found at the garden shop are usually grown from seed and similar to the true species found in nature. These bushes have thick stems and fleshy branches. Their foliage is generally oval-shaped and varies in size (2-7 inches). The size generally depends on the maturity of the plant and its location. These plants commonly grow outdoors, however, when they are young, they can be seen within an indoor area.2. Petunia - The common garden is an ornamental plant whose showy turmpet shaped flowers make it popular for summer flower beds and window boxes. 3. Zinnias are annuals, so they'll grow for one season and produce seeds, but the original plant will not come back in subsequent years.