Hi Group

My soakaway consists of a hole about two feet deep and two feet in diameter
dug at the lowest edge of my lawn. Two hydrangeas planted opposite each
other either side of the hole, these have now grown to cover the hole. They
drink all the water they can get and the hole provides temporary storage in
times of heavy rain storms. It works is all I can say! The climbing
hydrangea is now a few inches short of the apex of the roof on my two story
semi-detached. Obviously not a good idea if you dont like these plants

Alan