We are about to grade a small vacant lot which we own (it's adjacent to a
small commercial building which we're renovating-- location is urban
America... New York City!). The lot get's fantastic sunlight... nearly
all day long..... so we want to plant trees, shrubs, gardens(tomatoes,
etc.), grass.....
We need to order a lot of topsoil to fill in the lot....
Question is: ... is topsoil good enough for planting? somewhere i've
heard that topsoil is not good for planting(has no nutrients??).... but i
have no idea about that.
Should we mix in with the topsoil bags of so called , "tree and shrub
planting dirt" and "flower and vegetable planting dirt"?

All suggestions greatly appreciated