The Cornish Gardens are particularly stunning in the Spring and early Summer, when flowering shrubs such as Azaleas and Camellias are at their best - have a look on:
There are many fabulous gardens in Cornwall open for just a few days a year under The National Gardens Scheme: www.ngs.org.uk/
The National Trust owns a number of superb Houses, Gardens, Estates and open spaces in Cornwall and Devon many of which are within easy reach of Trevadlock: www.nationaltrust.org.uk
Favourites:
Cothele
Lanhydrock
Lydford George (Devon)
Castle Drogo (Devon)