Zone 4 Pink Delight butterfly bush. I ordered 8 plants and am wondering if I made a mistake, and they won't grow in Zone 4? Will they survive if prune them down to ground level in late Fall, and put a deep layer of straw over them until next Spring? Thank you.
Zone 4 Pink Delight butterfly bush. I ordered 8 plants and am wondering if I made a mistake, and they won't grow in Zone 4? Will they survive if prune them down to ground level in late Fall, and put a deep layer of straw over them until next Spring? Thank you.