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Mumbai
Karvy in Mumbai
Strobilanthes callosa
Sanjay Gandhi National Park has seen karvy flower en masse in 2000, 2008, 2016 and again in 2024, eight years apart each time.
Where to see it
Sanjay Gandhi National Park
Flowers only once every seven or eight years; in a flowering year the park's hill slopes turn blue-violet
Malabar Hill Elevated Nature Trail
How to recognise it
Between flowerings it is a dull, woody thicket with big rough leaves. In a flowering year the hills above Pune turn blue in September and October.