It is always best to start seed indoors where you will have better control. Never use garden soil for germination. We recommend a soiless potting mix which can be purchased at your local hardware or garden...
Potatoes will grow in almost any soil type but do grow better if the soil is a little on the acidic side. Most of us have soil that is closer to neutral or more basic. So to help out your potatoes, add oak...
There are many resources on the web for growing hostas from seed, but regardless which method you prefer...... it is very easy! You will need a clean pot or seed tray, peat moss, vermicilite, and your seeds....