What is the best habitat for ladybugs?

According to National Geographic, ladybugs live best in moderate climate crop areas, where they have access to many plants and aphids to supplement their diet. That being said, ladybugs are very hardy and live in most parts of the world.

Ladybugs are found in all of the continental United States and the southern half of Alaska, most of Canada, all of South America, all of Africa, all of Asia and most of Europe. Only the very northernmost parts of the world are too cold for ladybugs, and this is mostly because of a lack of plants and parasites for their diet.