In the greenhouses workers keep an eye on the thermometer and maintain accurate records. We are always planning ahead. A lot of school children come in on school trips then bring their parents back. And if anyone wants to get hold of a particular plant, Kew can give advice of where to look in the trade. Royal Botanic Gardens, Kew, are open throughout the year, except on New Year's Day and Christmas Day, from 9.30am.
Closing times change depending on the season.
Children under five, blind and partially sighted visitors and essential carers are free. There are plenty of places to eat and drink. Reporter Deborah Tucknott gazes up at the dizzy heights of tropical trees in the Palm House.