How should I handle a new, dormant Hosta plant which has just been delivered?
Assuming that your plant consists of roots and pips in a mass of moss or other transport media, you can pot it now in a good grade of moist potting soil. Cool, basement temperatures will be OK for now. When new growth starts, give your new plant good light and a light application of fertilizer. Water as needed but avoid soggy conditions. Do this until you move the plant into a cold frame or into a shady spot in your garden.