Best time to plant butterfly bush?

Question

Live in zone 4.

Answer 1

Spring would be the best time cos sometimes they don't make it through the winter. They generally are hardy to zone 5 so make sure you get one that is hardy in zone 4.

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/zone-4-butterfly-bush-options.htm

Here is their care information:
https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-care.htm