Planting Ideas in the Urban Forest – Mark Johnston's Keynote Address to ISA Annual Conference 2025

Mark takes an inspiring journey through the past, present and future of the international urban forestry movement. For over fifty years, he worked with many excellent people to develop exciting projects that pioneered new ideas and approaches to urban greening. But his keynote doesn’t just look back. By learning from the past, arborists and urban foresters can realise their enormous potential to help create the green cities of the future. Christchurch, New Zealand, 2025, video copyrighted to International Society of Arboriculture.