Posted this at another site, but anxious to hear comments here....Years ago, a nursery which also did excellent landscaping, had a huge pile of soil stacked at their place....They had a guy there who had his Masters Degree from WVU in plants, soils etc....Don't know the degree name, but you get the idea....He told me the large soil pile was a mixture of good top soil, mushroom compost,coco shells, double shredded hardwood and some sand.....He said in that way, he was "covering all bases!".....Used it to plant everything!!!!.....He have me a garbage can full for 5 bucks and it worked for everything I planted....So, what do you think?.....Have a nice day to all!!!!