I've given up my plans to try and grow my avocado trees in containers and have decided to plant them in the ground.

I have a Holiday, Hass and Fuerte - all about 7'tall and I still plan to prune them when they reach about 8'.

My backyard can get windy so I've selected spots close to the house and side fences.

I'm preparing raised beds with amended soil and mounds.

I've got some clay soil, but one spot tested OK (15 min.) for water draining out of a 2' deep hole and the other spot is where I removed an in ground spa and back filled with good soil.

I plan to plant the Holiday by itself and the Hass/Fuerte in the same raised bed.

What soil amendments are recommended - what might I be forgetting to do?