Safe useful life expectancy

(SULE)

A classification for trees developed by Jeremy Barrell of Barrell Tree Consultancy, published in 1993, consisting of five categories: from SULE more than 40 years (1) to less than 5 years (4), as well as young or small trees.



This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
Read the preface. Order the book.



Previous term | Next term