The orchid is part of an extremely large and diverse group of flowering plants, the Orchidaceae or the orchid family. The plant’s flower are usually colorful and fragrant. Nowadays, there are no less than 28,000 known species, divided into about 763 genera. Orchidaceae and Asteraceae are the largest families of flowering plants.

In addition, the flowers of orchids come in many different arrangements. Some only have a single flower, but most plants have a racemose inflorescence, which can consist of many flowers.

The majority of orchids which are commercially sold is tropical or subtropical. There are varieties however that grow in colder climates. These temperate species produced in greenhouses are among others: Ophrys apifera (bee orchid), Anacamptis pyramidalis (pyramidal orchid), Gymnadenia conopsea (fragrant orchid) and Dactylorhiza fuchsii (common spotted orchid).