dig a big fucking hole, add sand, two dead bait fish and a bucket full of cowshit and chicken shit at coca husk if you got it, i used to use a light liquid fertiliser everytime i watered, every second or third day, dont over water and let them dry out a little between watering as this makes the roots look for water and grow, the better the soil preperation the better! be careful of blood and bone it is an xcellent fertiliser but attracts wildlife, like dogs.