Around 6,500 flowering plants and shrubs are used for the clock face. The plants are changed as the seasons change.
The clock was created in 1955 as a symbol of the city's watchmakers, and a dedication to nature.
Its second hand is the longest in the world, at 2.5 metres (8.2 ft). It was the largest flower clock in the world, with a diameter of 5 metres (16 ft), until the 2005 installation of a 15 metres (49 ft) one in Tehran, Iran. 
- "Tehran "Flower Clock" rivals Big Ben". Payvand. Retrieved 17 April 2009.
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- Ville-geneve.ch: official L'horloge fleurie website—(in French), Patrimoine et monuments, Monuments et lieux d'intérêt.
- Great Magazine of Timepieces » Geneva Watch Tour
- Geneva's best watchmaking landmarks
- CitySeeker.com: L'Horloge Fleurie, Geneva
- Things to see in Geneva — Jardin Anglais (English Garden) and L'horloge Fleurie (Flower Clock).
- L’Horloge Fleurie – The World’s Most Beautiful Clock
- Patrimoine-horloge.fr: Horloge fleuri de Lviv, Ukraine