Perhaps the most significant of these, certainly the most time-consuming and costly, was "Arboretum et Fruticetum Britannicum". This work was published in three formats: with the plates entirely uncoloured, with botanical details hand-coloured, and fully hand-coloured. Work began in 1830 and it was first issued in sixty-three monthly parts from January 1835 to July 1838. It presented: an exhaustive account of all the trees and shrubs growing in Great Britain and their history; notes on remarkable examples growing in individual gardens; drawings of leaves, twigs, fruits, and the shapes of leafless trees; and entire portraits of trees in their young and mature state. All were drawn from life, many being from the parkland grounds of Syon House, one of the homes of the Duke of Northumberland to whom the work was dedicated, or from Loddiges' arboretum. "It was on the collection maintained by this firm more than any other that J. C. Loudon relied for living material in the preparation of his great work" W. J. Bean notes, in "Trees and Shrubs Hardy in the British Isles". The publication also ruined him financially, as he ended up with many unsold copies of the eight-volume work and went deep into debt.