If it were me, I would use as little peatmoss as possible and no compost at all..This is the reason why plants would decline in such a short time in these soils, unless you can repot every other month or so, before the compaction occurs. I would buy a "farfard" mix with more bark than peat. I would find a way to strain out most peat moss from any bagged mix and use the left over bark, perlite and very lttle peat. I would make my own of course, which is what I always do. Or, if you do not want to do all this work, you could mix half and half soil mix and perlite, and hope your mix does not hold water too long and compact just to get you to square one.. Your goal is to use a mix that holds its structure and allows the roots to move and breath as long as possible. It is to use a very course mix, porous and one that drains well. I would also fertilize with a water soluable fertilizer with the major and minor nutrients, or use Foiliage Pro what is what I use.. If you use an organic mix, watch for "fungus gnats", soil compaction which can suffocate roots quickly which causes decline. Watch for spider mites or others pest that like weaked plants, and watch for root rot. You could avoid the root rot from over watering, by placing the plant in a pot just big enough for the roots, but then too it can stunt the growth of your plant by keeping it root bound.. pebbles on the bottom are better left out. They impeded draining and only take up room in the pot. better is it to have more than a couple holes on the bottom of your containers for great drainage.. Mike..:-)

I wouldnt think so because it was raised in a big pot with all hair roots intact. Now if you bust it to pieces trying to get it out better wait till the leaves fall off.

I just saw a post today on one of the garden forums here about someone finding previously buried bean seeds on top of the ground, another poster said that happened sometime after raining/watering, that the soil level will pack down. Here in my area, uncovered seeds/beans would be an invitation for squirrels or birds to feast.

Earthworms need organic matter, that is what they live on. How much is in the soil?