1999  Established Environmental Art Group ‘Muum’ and subsequently executed over 250 public art projects.
2011  Won the award of ‘Best in Artisan Garden’ and ‘Gold Medal’, RHS Chelsea Flower Show, London, UK
(Hae Woo So: Emptying your Mind: Traditional Korean Toilet)
UK London Korean Links ‘Person of the Year’ and ‘Ones to watch out for in 2012
2012  Won the award of ‘President’s Award’ and ‘Gold Medal’ in Show Garden, RHS Chelsea Flower Show, London, UK (Quiet Time: DMZ Forbidden Garden)
‘Mudflat: Sewn by Mother’s Hand – Suncheon Bay’, Floriade, The Netherlands
Represented Korea at the Gardening World Cup (World’s Top Ten Garden designer invitation exhibition), Nagasaki, Japan
Invited to the Gwangju Biennale, South Korea Won the award of ‘Landscaper of the Year Award’ South Korea
2012-14 / 2016  ‘Quiet Time: DMZ Forbidden Garden’, exhibited in London Pleasure Gardens Park, UK
2013 ‘Mudflat: Sewn by Mother’s Hand’ Permanent Installation, Lons-le-Saunier, France
‘Lugworm Path’ & ‘Mudflat Stage’, Suncheon Bay International GardenExpo, Suncheon, Korea
Invited to the 4th Korea Brand & Entertainment Expo,
‘0.001 – Water Flows Downwards’, Oldbillingsgate London, UK
2014 Re-created the work from Chelsea Flower Show – Gwangju Ecology Lake, South Korea
Won the award of ‘Female Leader for Future,’ Woman’s News, South Korea
‘A letter posted one million years ago –Dokdo’ London Miniature Garden Show, in 5th-9th March, The Strand Gallery , a touringexhibition
Peace Art Festival, Photo installation
2015 Kim Dae Jung Convention Center ‘2015 Gwangju Spring flower Expo-Garden construct plan and Director
Invited to the Seoul Garden Festival ‘The sun was shining on the corner’, Seoul, South Korea
2016 DDP ( Zaha Hadid Seoul Design Center) ‘Trouble anxieux’ Installation
MMCA(National Museum of Modern and Contemporary Art, Seoul)
‘Bambalina sp.’ Installation
2017 Seoullo 7017 ‘Shoes tree’ Installation
traffic island garden project in front of Sungnyemun Gate # ‘Trees draw light in the south’
2018 Seoul botanic park # Aritisan garden ‘Moving Seeds’
2019 MMCA (National Museum of Modern and Contemporary art, Korea) Roof garden project ‘Vessel’
2021 MMCA (National Museum of Modern and Contemporary art, Korea)
‘Circular Garden Project: Leisurely and Lively Conversation’
2022 Heritage Yuwa
‘Kinttingof the sun : A Daugherof Valley Wind’ Installation , IFLA world congress, IFLA2022