The Trees can grow in pure sand as their number one source of everything is LIGHT.
The only thing we are really doing with all of the rich soils that most build is trying to make up for what lack of light most have in their grows.
If you want to go extra cheap on building soil, I will give you the cheapest advice, but I can assure you, that it will allow you a wonderful Organic product that will probably be the best you have had and you can do this throughout the grow.
Simply, take your pots or pots and go to wal-Mart ect and buy a bag of Miracle Grow Organic choice soil " not a miracle grow fan at all, but I use this soil and it is very good and have had nothing but prize results, as it is up to you to build it correctly anyhow. "
Put you a few handlfuls of rocks a little bigger than pebbles and a bannana and two apples and cut them up and mix them in the soil and go to a fishing store and buy you a cup of red worms and put them in the pot and cover them.
Water the soil a little bit and do not let it dry out as you will let the soil sit " with at least a few hours of light a day, " for two weeks, while you are getting ready to germinate your seed or seeds.
If you have a nice fertile lawn nearby, that has not had chemicals used, you can also get a small scoop of yard dirt " make sure there's no grass in your scoop " to add some micro beasties and other beneficials to the soil for the price of nothing, " the soil beasties will populate and the worms will feed and poop out one of the best fertilizers in the world " worm castings/crap. "
Water every seven to eight days with pure water and a teaspoon or two of raw apple cider vinegar for every gallon of water.
During flowering. you will want to water them every other watering, with " Unsulfured Backstrap Molasses or Raw Dark Honey.......has to be RAW and Natural Honey, " at about two to three spoons per gallon.
Soil bugs will not get on your plants and will only benefit them.
You can also buy a cheap bag of chamomile seeds and plant a couple Chamomile flowers in your pot with the " Tree " and it will also benefit as a companion and increase the essential oils within the Cannabis and even help feed the Cannabis appropriately as the Chamomile, will re-release it's own aquired nutrients back to it's friend Cannabis, in a more controled way.
Very simple and very cheap and your smoke will be incredible and most of all " Organic and Healthy. "
PROMISE..
Be Blessed,
Rev. TheNatural