I planted lobelia, alyssum, geraniums, and petunias 4 days ago. Now we have snow. I covered the geraniums and some of the plants with trash bags for protection. Do I need to cover the whole garden with sheets or plastic drop cloths? Or can they survive 6 to 8 hours of cold followed by snow that will melt by noon?
I Planted Plants 4 Days Ago, Now We Have Snow
This article explains some aspects of protecting plants from cold: https://www.gardeningknowhow.com/plant-problems/environmental/protect-plants-in-freeze.htm
Do what you can and hope for the best. You may have to replace some of the plants. This crazy weather has us all perplexed.