Hi,
I am starting a street wide gardening project to plant under plane trees in London.
I would like to put a small wooden border around the trees so we can add good soil without it washing away. The earth under the trees is currently rock hard sand and gravelly soil. If we put a wooden border up, it would interfere with car doors opening by the curb. I am also wondering how soil might damage the base of the plane trees, even though it will be very low level. A link to good plant choices would also be great.
Any help or thoughts much appreciated.
Thanks
Anna