Native to the eastern U.S., the acacia, or black locust tree (Robinia pseudoacacia), has lush, cool green foliage, flat pods that hold their seeds and clusters of sweet, cream-coloured flowers. Cultivated in Europe since the 17th Century, the tree can live for over 300 years. Today, in Paris, you can still see two unique specimens, planted by King Henri IV's gardener back in 1601.

Candle