Working on my outdoor set up. I dug up the dirt in an 8 x 10 area. Removed some of the top soil and purchased Sphagnum Peat Moss and garden soil for flowers and vegs. Is this ok to mix with the existing soil and then try to plant my seeds.(dandelion,hibiscus,wild lettuce,wild grass and flower seeds.) Not sure if the ingredients ( cow manure ) in the garden soil and bag of peat moss are ok for the torts? I plan to use 2/3 of the area for planting.