Don presented the BBC's Around the World in 80 Gardens in 2008 and Italian Gardens in 2011.
He tweeted that the series would be "similar to Italian ones but this time done by theme rather than geography".
The show is scheduled for April 2013. Production will be over by New Year.He said the series would be "the whole [of] France - but, in these days of cuts, in just three hours".
He filmed in Provence and Cevennes last week.