Boggy/wetland area

Hopefully by the end of this week I will have fiished the wildlife pond. Nothing too big just 10x6x2 well planted and no fish. Between it and the fence is a space of about 4 - 5ft. I have an old liner from a previous pond and intend to dig this area up pierce the liner then refill with the soil I dug out. This will give me a strip about 12ft x 4ft which will be boggy. How deep do I need to dig to allow for the plants roots to go down. Any recomendations for planting ? or links to a site that covers this type of project.

 

http://www.english-nature.org.uk/science/wetland/wetland_projects.asp

this is really useful organisation, with very useful (free) booklets about doing wildlife-friendly things.

 

Thanks its a great site. Downloaded most of the pdf files there are some really great ones.
Thanks again,
John,

 

chkm8, you just got to have a gunnera! :D