1. Find a Good Overwintering Place. To be sure plants know it is winter, you need a dry space where temperatures stay above 45°F (7°C) but below 60°F (15°C). ... Light is not a factor for dormant plants, though weak winter light won't hurt them.

Do plants need light over winter?

Plants are similar to people, they need light, even indoor plants. The amount of light that homes get during the winter months is short, and if your house doesn't face the right way, you may only get light in certain rooms and through certain windows.

Do dormant plants need light?

In this dormant state, your hostas (and other winter-dormant perennials being stored in pots, for that matter) don't need any light. ... But inside, they're not getting any of the cold winter rains or snow melts that keep the roots hydrated outside.