Posted: 01/12/2015 at 12:57
Hi Sorcha - a couple of artists/gardeners here
Not sure about the dead tree - dead trees create their own very rich eco-systems providing habitats and nutrition for invertebrates..... of course, while a dead tree is a frequently-used trope when addressing dystopia, I believe that dystopia can be a very subjective concept .......
but it's all a interesting idea - a couple of things come to mind ...
Consider using peat-based potting compost - the harvesting of the peat is destroying habitat-rich peat bogs in northern Europe.
Have a look at the history of the 'rock garden' in the UK - http://www.limestone-pavements.org.uk/gardeners.html . The need for rock to make rock gardens has in the past caused irrevocable damage to ancient wate-rworn limestone pavements which are one of the world's finest and most endangered habitats.
Himalayan Balsam (an introduced species) is now causing real damage to riverbanks causing flooding and erosion http://www.worcswildlifetrust.co.uk/species/himalayan-balsam
Rhododendrons spreading throughout woodland prevent anything else from growing underneath or around them. There are organised programmes taking place nowadays by the National Trust and others to remove them.
Hope that helps - let us know how it goes