From the Wikipedia page 
The white variant of Darjeeling tea has a delicate aroma and brews to a pale golden color with a mellow taste and a hint of sweetness. Darjeeling white tea leaves are very fluffy and light; therefore, it is recommended to use more (by volume) when preparing it than one normally would of other teas.
The tea is hand picked and rolled, then withered in the sun, making it a rare tea. It is grown in the rainy and cold climate of Darjeeling at altitudes up to 2000 metres.