Hibiscus (Hibiscus rosa-sinensis) is also known as: Chinese Hibiscus, China Rose, Rose of China, Rose-Of-China, Hawaiian Hibiscus, Rose Mallow, Soeblackplant, Shoe-Black-Plant, Tropical Hibiscus, Red Hibiscus, Shoe Flower. The flower pedals can be rubbed on shoes in place of polish to make the shine.
Snow Crocus (Crocus chrysanthus) emerging in the spring.
This is a Dwarf Crested Iris (Iris cristata). They are also known as a crested iris.