The parking lot was busy on a Tuesday afternoon, and as I walked in I noticed a sign directing curbside pickup customers. Mary Meisenzahl/Insider Many retailers, including Home Depot, added or expanded curbside offerings that experts credit with helping them survive the pandemic. ALEX EDELMAN/AFP/Getty Images Source: Insider Walking up to the store, I was struck by how much greenery was everywhere, from flowering plants to vegetable seedlings. Mary Meisenzahl/Insider Home Depot, at least at my location, essentially doubles in size in the spring, when the nursery spills outside into a large uncovered area, plus the gardening section and in front of the store. Mary Meisenzahl/Insider Home Depot is typically…