Echinacea (coneflower) is a beautiful native perennial that supports pollinators and has medicinal uses.
Zone 4B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.
Good companions: black-eyed Susans, grasses, lavender, bee balm
Avoid planting near: none — echinacea is a great garden citizen
Blooms first year from transplant, second from seed; leave some for wildlife
USDA Hardiness Zone 4B has an average last spring frost around May 1 and first fall frost around Oct 1. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.