As we start to see the first signs of some brighter weather, many people will be tempted to get out into the garden and - hopefully - enjoy the sunshine.
For some people - such as armed forces veterans - it's already proving a tonic while they cope with issues like post traumatic stress disorder.
Now a scheme designed to give ex-servicemen and women training in the art of horticulture is giving people and places in Hull a green boost.
Dr Steel says that of the veterans who have served in combat situations, 17 per cent suffer from PTSD issues.
The project in Hull will plant 4,000 trees.
There will be similar planting projects going on across the UK in the coming year.