I live in Switzerland, altitude 1, 000m. I want to plant a few Lantanas (what kind?) into pots. Will they get through the winter outside, or do I have to put them into a cellar, which is not heated and has no light. Thank you.
Lantana will not survive your winter outside. If your cellar stays above 32*F., the lantana will survive, but require light. Fluorescent bulbs of warm white and cool white will give the light spectrum needed to overwinter.