I am in the process of creating a 2 acre garden from a field. I could do with some help on what to under plant in the Hazel nut grove. The added twist is that we are in a flood plain with clay soil, so in the winter the ground is soggy to say the least! and in the summer (well usually) the ground is as hard as marble, with no drainage except for what we add ourselves. In the spring and Autumn the plants have to contend with flood water.