Our slightly larger than average (for a modern development) block of land is almost totally flat and currently consists of black clay with a fairly unhealthy amount of builder's rubble scattered through it.
Now, I understand that I'll have to provide some drainage if I want my avocado trees not to die from too much water around the roots, and that even though we'll have a raised vegie bed or two, it would be better if we had some drainage underneath these beds.
Can someone direct me to a book, thread on the H1 forum, website or youtube clip that will help me understand what we need to do to have this soil drain well? Or, do we have to bite the bullet, save our non-existent money and pay someone with real knowledge to tell us what to do? We definitely don't have the money to pay someone to do it, and I'd like to have at least some plants and a bed or two of vegies in by spring - and it is just around the corner.
The soil just has to see the rain clouds coming and it turns into this incredibly sticky mess. I think this is beyond simple measures such as hoeing in hay.
The builder's rubble is pervasive. Is it possible to get a bob cat or similar in to sieve out the worst bits, or should we just have even our trees in soil built up above the level that our clay swamp now is?