A descendant of the Tremayne family of Heligan (July 16^th) and the Boscawen (Viscount Falmouth) family of Tregothnan, Boscawen was introduced to the joys of horticulture from an early age. This was further developed when he became Rector of Ludgvan whose gardens had been laid out by William Borlase (August 31^st) after Borlase's appointment to the Ludgvan living in 1722.

Boscawen spent much of his time cultivating trees and shrubs from New Zealand and also plants from the Isles of Scilly, donated by the Dorrien – Smith family of Tresco.  He also introduced anemones and broccoli as commercial crops.   Harvesting both crops is very labour intensive but in Boscawen’s day there was ample labour available. 

Anemones are much less valuable in Cornwall now but, with the introduction of mechanisation in farming, broccoli is a major cash crop to this day and its market continues to increase. In recognition, of his achievements, Boscawen was awarded the Victoria Medal of Honour in 1922 by the Royal Horticultural Society.