The Karvi flower last bloomed in 2008. Eight years later it is bringing colour back to the hills in Maharashtra and parts of southern India. The video above, shot in Mumbai's Sanjay Gandhi National Park, follows a group of botanists and travellers along the "Karvi Trail".

For seven long years, the plant remains a flowerless common shrub, undistinguishable from any other. But after eight years, it shows why some refer to is as "nature's miracle". Here's a trip from 2009, a year after it last flowered, when the buds were seven years away from blooming.

Karvi leaves are toxic to humans, but the honey found within the flowers, seeing as it is available only once every eight years or so, draws all kinds of butterflies and insects, and is valuable and expensive. It's costs twice as much as the jars of honey normally found in stores.

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Here, the flowers can be seen in full bloom in the Mulund hills in Mumbai.

All is not well with the plant, though. According to a report, while it remains healthy in the National Park, quarrying has affected the habitat in other areas.