Agroforestry Research Trust - researches into temperate agroforestry and into all aspects of plant cropping and uses, with a focus on tree, shrub and perennial crops.
Borders Forest Trust - work to conserve, restore and manage native woodlands and other natural habitat in the South of Scotland for the benefit of people and wildlife.
International Tree Foundation - encourages the planting and preservation of trees and promotes interest in tree cover from an environmental perspective.
Reforesting Scotland - is a networking organisation of those active in the ecological and social regeneration of Scotland .
Tree Aid - UK and Africa based org. Tree Aid does not implement its own projects. It funds local organisations that are already working with village communities they know.
Trees for Life - regenerates and restores native Caledonian Pine Forest in Scotland
Treesponsibility - positive action on climate change and biodiversity using community-based reforestation.