I plan to use garden soil ( from my veggie garden which has been amended with compost over a number of years ) one set of 5 pots with garden soil and pine fines , one set of 5 pots without , 1gallon pots, set in the same sunny area , measured water. My expected result would simply be to see which plants do better and to see how the fines affect the plants in general . I won't use commercial potting soil as it is not something I would normally have here .
